Channelization for signal boosters

ABSTRACT

Technology for a repeater is disclosed. The repeater can include a signal path that includes a digital filter. The repeater can include a controller. The controller can receive a multi-channel downlink signal. The controller can digitize the multi-channel downlink signal to form a plurality of channelized downlink signals. The controller can determine a base station coupling loss (BSCL) value for each of the channelized downlink signal. The controller can use the digital filter to adjust a gain of one or more of the channelized downlink signals based on the BSCL value for each of the channelized downlink signals.

RELATED APPLICATIONS

The present application is a continuation of U.S. patent applicationSer. No. 15/959,107 filed Apr. 20, 2018 with a docket number of3969-053.NP.US.01.CIP, which is a continuation-in-part of U.S. patentapplication Ser. No. 15/294,511 filed Oct. 14, 2016 with a docket numberof 3969-053.NP.US.01 and U.S. patent application Ser. No. 15/294,534filed Oct. 14, 2016 with a docket number of 3969-053.NP.US.02, whichclaim the benefit of U.S. Provisional Application No. 62/241,640 filedOct. 14, 2015 with a docket number of 3969-053.PROV.US.01, the entirespecifications of which are hereby incorporated by reference in theirentirety for all purposes.

BACKGROUND

Signal boosters and repeaters can be used to increase the quality ofwireless communication between a wireless device and a wirelesscommunication access point, such as a cell tower. Signal boosters canimprove the quality of the wireless communication by amplifying,filtering, and/or applying other processing techniques to uplink anddownlink signals communicated between the wireless device and thewireless communication access point.

As an example, the signal booster can receive, via an antenna, downlinksignals from the wireless communication access point. The signal boostercan amplify the downlink signal and then provide an amplified downlinksignal to the wireless device. In other words, the signal booster canact as a relay between the wireless device and the wirelesscommunication access point. As a result, the wireless device can receivea stronger signal from the wireless communication access point.Similarly, uplink signals from the wireless device (e.g., telephonecalls and other data) can be directed to the signal booster. The signalbooster can amplify the uplink signals before communicating, via anantenna, the uplink signals to the wireless communication access point.

BRIEF DESCRIPTION OF THE DRAWINGS

Features and advantages of the disclosure will be apparent from thedetailed description which follows, taken in conjunction with theaccompanying drawings, which together illustrate, by way of example,features of the disclosure; and, wherein:

FIG. 1 illustrates a signal booster in communication with a wirelessdevice and a base station in accordance with an example;

FIG. 2 illustrates a signal booster in communicate with a relativelyclose base station and a relatively distant base station in accordancewith an example;

FIG. 3a illustrates an example of a channelization device in accordancewith an example;

FIG. 3b illustrates a channelized signal booster in accordance with anexample;

FIG. 3c illustrates an active channelized inline device in accordancewith an example;

FIG. 4 illustrates a channelized box in accordance with an example;

FIG. 5 illustrates a channelized dual-common port (DCP) multi-bandpassfilter (MBF) filter in accordance with an example;

FIG. 6 illustrates a varying intermediate frequency (IF) notch filterfor a channelized signal booster in accordance with an example;

FIG. 7 illustrates a switching IF notch filter for a channelized signalbooster in accordance with an example;

FIG. 8 illustrates a DCP MBF multiband radio frequency (RF) or IF notchfilter in accordance with an example;

FIGS. 9a-9c illustrates a dual-band, non-simultaneous channelized devicein accordance with an example;

FIGS. 10a-10c illustrates a channelized DCP MBF implementation inaccordance with an example;

FIGS. 11a-11c illustrates a channelized DCP MBF implementation using aquadplexer in accordance with an example;

FIGS. 12a and 12 b illustrate a channelized digital implementation usinga digital signal processor (DSP) in accordance with an example;

FIG. 13 illustrates a channelized box in accordance with an example;

FIG. 14 illustrates a channelized box in accordance with an example; and

FIG. 15 illustrates a handheld booster in communication with a wirelessdevice in accordance with an example.

Reference will now be made to the exemplary embodiments illustrated, andspecific language will be used herein to describe the same. It willnevertheless be understood that no limitation of the scope of theinvention is thereby intended.

DETAILED DESCRIPTION

Before the present invention is disclosed and described, it is to beunderstood that this invention is not limited to the particularstructures, process steps, or materials disclosed herein, but isextended to equivalents thereof as would be recognized by thoseordinarily skilled in the relevant arts. It should also be understoodthat terminology employed herein is used for the purpose of describingparticular examples only and is not intended to be limiting. The samereference numerals in different drawings represent the same element.Numbers provided in flow charts and processes are provided for clarityin illustrating steps and operations and do not necessarily indicate aparticular order or sequence.

Example Embodiments

An initial overview of technology embodiments is provided below and thenspecific technology embodiments are described in further detail later.This initial summary is intended to aid readers in understanding thetechnology more quickly but is not intended to identify key features oressential features of the technology nor is it intended to limit thescope of the claimed subject matter.

FIG. 1 illustrates an exemplary signal booster 120 in communication witha wireless device 110 and a base station 130. The signal booster 120 canbe referred to as a repeater. A repeater can be an electronic deviceused to amplify (or boost) signals. The signal booster 120 (alsoreferred to as a cellular signal amplifier) can improve the quality ofwireless communication by amplifying, filtering, and/or applying otherprocessing techniques via a signal amplifier 122 to uplink signalscommunicated from the wireless device 110 to the base station 130 and/ordownlink signals communicated from the base station 130 to the wirelessdevice 110. In other words, the signal booster 120 can amplify or boostuplink signals and/or downlink signals bi-directionally. In one example,the signal booster 120 can be at a fixed location, such as in a home oroffice. Alternatively, the signal booster 120 can be attached to amobile object, such as a vehicle or a wireless device 110.

In one configuration, the signal booster 120 can include an integrateddevice antenna 124 (e.g., an inside antenna or a coupling antenna) andan integrated node antenna 126 (e.g., an outside antenna). Theintegrated node antenna 126 can receive the downlink signal from thebase station 130. The downlink signal can be provided to the signalamplifier 122 via a second coaxial cable 127 or other type of radiofrequency connection operable to communicate radio frequency signals.The signal amplifier 122 can include one or more cellular signalamplifiers for amplification and filtering. The downlink signal that hasbeen amplified and filtered can be provided to the integrated deviceantenna 124 via a first coaxial cable 125 or other type of radiofrequency connection operable to communicate radio frequency signals.The integrated device antenna 124 can wirelessly communicate thedownlink signal that has been amplified and filtered to the wirelessdevice 110.

Similarly, the integrated device antenna 124 can receive an uplinksignal from the wireless device 110. The uplink signal can be providedto the signal amplifier 122 via the first coaxial cable 125 or othertype of radio frequency connection operable to communicate radiofrequency signals. The signal amplifier 122 can include one or morecellular signal amplifiers for amplification and filtering. The uplinksignal that has been amplified and filtered can be provided to theintegrated node antenna 126 via the second coaxial cable 127 or othertype of radio frequency connection operable to communicate radiofrequency signals. The integrated device antenna 126 can communicate theuplink signal that has been amplified and filtered to the base station130.

In one example, the signal booster 120 can filter the uplink anddownlink signals using any suitable analog or digital filteringtechnology including, but not limited to, surface acoustic wave (SAW)filters, bulk acoustic wave (BAW) filters, film bulk acoustic resonator(FBAR) filters, ceramic filters, waveguide filters or low-temperatureco-fired ceramic (LTCC) filters.

In one example, the signal booster 120 can send uplink signals to a nodeand/or receive downlink signals from the node. The node can comprise awireless wide area network (WWAN) access point (AP), a base station(BS), an evolved Node B (eNB), a baseband unit (BBU), a remote radiohead (RRH), a remote radio equipment (RRE), a relay station (RS), aradio equipment (RE), a remote radio unit (RRU), a central processingmodule (CPM), or another type of WWAN access point.

In one configuration, the signal booster 120 used to amplify the uplinkand/or a downlink signal is a handheld booster. The handheld booster canbe implemented in a sleeve of the wireless device 110. The wirelessdevice sleeve can be attached to the wireless device 110, but can beremoved as needed. In this configuration, the signal booster 120 canautomatically power down or cease amplification when the wireless device110 approaches a particular base station. In other words, the signalbooster 120 can determine to stop performing signal amplification whenthe quality of uplink and/or downlink signals is above a definedthreshold based on a location of the wireless device 110 in relation tothe base station 130.

In one example, the signal booster 120 can include a battery to providepower to various components, such as the signal amplifier 122, theintegrated device antenna 124 and the integrated node antenna 126. Thebattery can also power the wireless device 110 (e.g., phone or tablet).Alternatively, the signal booster 120 can receive power from thewireless device 110.

In one configuration, the signal booster 120 can be a FederalCommunications Commission (FCC)-compatible consumer signal booster. As anon-limiting example, the signal booster 120 can be compatible with FCCPart 20 or 47 Code of Federal Regulations (C.F.R.) Part 20.21 (Mar. 21,2013). In addition, the signal booster 120 can operate on thefrequencies used for the provision of subscriber-based services underparts 22 (Cellular), 24 (Broadband PCS), 27 (AWS-1, 700 MHz Lower A-EBlocks, and 700 MHz Upper C Block), and 90 (Specialized Mobile Radio) of47 C.F.R. The signal booster 120 can be configured to automaticallyself-monitor its operation to ensure compliance with applicable noiseand gain limits. The signal booster 120 can either self-correct or shutdown automatically if the signal booster's operations violate theregulations defined in FCC Part 20.21.

In one configuration, the signal booster 120 can improve the wirelessconnection between the wireless device 110 and the base station 130(e.g., cell tower) or another type of wireless wide area network (WWAN)access point (AP). The signal booster 120 can boost signals for cellularstandards, such as the Third Generation Partnership Project (3GPP) LongTerm Evolution (LTE) Release 8, 9, 10, 11, 12, or 13 standards orInstitute of Electronics and Electrical Engineers (IEEE) 802.16. In oneconfiguration, the signal booster 120 can boost signals for 3GPP LTERelease 13.0.0 (March 2016) or other desired releases. The signalbooster 120 can boost signals from the 3GPP Technical Specification36.101 (Release 12 Jun. 2015) bands or LTE frequency bands. For example,the signal booster 120 can boost signals from the LTE frequency bands:2, 4, 5, 12, 13, 17, and 25. In addition, the signal booster 120 canboost selected frequency bands based on the country or region in whichthe signal booster is used, including any of bands 1-70 or other bands,as disclosed in ETSI TS136 104 V13.5.0 (2016-10).

The number of LTE frequency bands and the level of signal improvementcan vary based on a particular wireless device, cellular node, orlocation. Additional domestic and international frequencies can also beincluded to offer increased functionality. Selected models of the signalbooster 120 can be configured to operate with selected frequency bandsbased on the location of use. In another example, the signal booster 120can automatically sense from the wireless device 110 or base station 130(or GPS, etc.) which frequencies are used, which can be a benefit forinternational travelers.

In one example, the integrated device antenna 124 and the integratednode antenna 126 can be comprised of a single antenna, an antenna array,or have a telescoping form-factor. In another example, the integrateddevice antenna 124 and the integrated node antenna 126 can be amicrochip antenna. An example of a microchip antenna is AMMAL001. In yetanother example, the integrated device antenna 124 and the integratednode antenna 126 can be a printed circuit board (PCB) antenna. Anexample of a PCB antenna is TE 2118310-1.

In one example, the integrated device antenna 124 can receive uplink(UL) signals from the wireless device 110 and transmit DL signals to thewireless device 110 using a single antenna. Alternatively, theintegrated device antenna 124 can receive UL signals from the wirelessdevice 110 using a dedicated UL antenna, and the integrated deviceantenna 124 can transmit DL signals to the wireless device 110 using adedicated DL antenna.

In one example, the integrated device antenna 124 can communicate withthe wireless device 110 using near field communication. Alternatively,the integrated device antenna 124 can communicate with the wirelessdevice 110 using far field communication.

In one example, the integrated node antenna 126 can receive downlink(DL) signals from the base station 130 and transmit uplink (UL) signalsto the base station 130 via a single antenna. Alternatively, theintegrated node antenna 126 can receive DL signals from the base station130 using a dedicated DL antenna, and the integrated node antenna 126can transmit UL signals to the base station 130 using a dedicated ULantenna.

In one configuration, multiple signal boosters can be used to amplify ULand DL signals. For example, a first signal booster can be used toamplify UL signals and a second signal booster can be used to amplify DLsignals. In addition, different signal boosters can be used to amplifydifferent frequency ranges.

In one configuration, the signal booster 120 can be configured toidentify when the wireless device 110 receives a relatively strongdownlink signal. An example of a strong downlink signal can be adownlink signal with a signal strength greater than approximately −80dBm. The signal booster 120 can be configured to automatically turn offselected features, such as amplification, to conserve battery life. Whenthe signal booster 120 senses that the wireless device 110 is receivinga relatively weak downlink signal, the integrated booster can beconfigured to provide amplification of the downlink signal. An exampleof a weak downlink signal can be a downlink signal with a signalstrength less than −80 dBm.

In one example, the signal booster 120 can also include one or more of:a waterproof casing, a shock absorbent casing, a flip-cover, a wallet,or extra memory storage for the wireless device. In one example, extramemory storage can be achieved with a direct connection between thesignal booster 120 and the wireless device 110. In another example,Near-Field Communications (NFC), Bluetooth v4.0, Bluetooth Low Energy,Bluetooth v4.1, Bluetooth v4.2, Bluetooth 5, Ultra High Frequency (UHF),3GPP LTE, Institute of Electronics and Electrical Engineers (IEEE)802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, orIEEE 802.11ad can be used to couple the signal booster 120 with thewireless device 110 to enable data from the wireless device 110 to becommunicated to and stored in the extra memory storage that isintegrated in the signal booster 120. Alternatively, a connector can beused to connect the wireless device 110 to the extra memory storage.

In one example, the signal booster 120 can include photovoltaic cells orsolar panels as a technique of charging the integrated battery and/or abattery of the wireless device 110. In another example, the signalbooster 120 can be configured to communicate directly with otherwireless devices with signal boosters. In one example, the integratednode antenna 126 can communicate over Very High Frequency (VHF)communications directly with integrated node antennas of other signalboosters. The signal booster 120 can be configured to communicate withthe wireless device 110 through a direct connection, Near-FieldCommunications (NFC), Bluetooth v4.0, Bluetooth Low Energy, Bluetoothv4.1, Bluetooth v4.2, Ultra High Frequency (UHF), 3GPP LTE, Institute ofElectronics and Electrical Engineers (IEEE) 802.11a, IEEE 802.11b, IEEE802.11g, IEEE 802.11n, IEEE 802.11ac, IEEE 802.11ad, a TV White SpaceBand (TVWS), or any other industrial, scientific and medical (ISM) radioband. Examples of such ISM bands include 2.4 GHz, 3.6 GHz, 4.9 GHz, 5GHz, or 5.9 GHz. This configuration can allow data to pass at high ratesbetween multiple wireless devices with signal boosters. Thisconfiguration can also allow users to send text messages, initiate phonecalls, and engage in video communications between wireless devices withsignal boosters. In one example, the integrated node antenna 126 can beconfigured to couple to the wireless device 110. In other words,communications between the integrated node antenna 126 and the wirelessdevice 110 can bypass the integrated booster.

In another example, a separate VHF node antenna can be configured tocommunicate over VHF communications directly with separate VHF nodeantennas of other signal boosters. This configuration can allow theintegrated node antenna 126 to be used for simultaneous cellularcommunications. The separate VHF node antenna can be configured tocommunicate with the wireless device 110 through a direct connection,Near-Field Communications (NFC), Bluetooth v4.0, Bluetooth Low Energy,Bluetooth v4.1, Bluetooth v4.2, Ultra High Frequency (UHF), 3GPP LTE,Institute of Electronics and Electrical Engineers (IEEE) 802.11a, IEEE802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, IEEE 802.11ad, a TVWhite Space Band (TVWS), or any other industrial, scientific and medical(ISM) radio band.

In one configuration, the signal booster 120 can be configured forsatellite communication. In one example, the integrated node antenna 126can be configured to act as a satellite communication antenna. Inanother example, a separate node antenna can be used for satellitecommunications. The signal booster 120 can extend the range of coverageof the wireless device 110 configured for satellite communication. Theintegrated node antenna 126 can receive downlink signals from satellitecommunications for the wireless device 110. The signal booster 120 canfilter and amplify the downlink signals from the satellitecommunication. In another example, during satellite communications, thewireless device 110 can be configured to couple to the signal booster120 via a direct connection or an ISM radio band. Examples of such ISMbands include 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, or 5.9 GHz.

Modern base stations are configured to communicate with multiple usersusing Orthogonal Frequency Division Multiple Access (OFDMA). Multipleaccess can be achieved in OFDMA by assigning subsets of subcarriers inan Orthogonal Frequency Division Multiplexing (OFDM) symbol toindividual users by allocating frequency and time resources. In uplink(UL) communications, signals from multiple users in their assignedfrequency and time resources are combined in a single OFDM uplinksymbol. In order to efficiently detect and process a received UL OFDMsymbol at a base station, the amount of power transmitted by each userdevice is limited to a maximum power. Limiting gain and noise power inan UL transmission to a base station is referred to as a networkprotection. By limiting the amount of gain and noise power that can betransmitted by a repeater, the amplifiers in the base station are notsaturated or overloaded, and the base station noise floor is notsignificantly increased. The allowable gain and noise power is typicallybased on the distance or signal loss from the repeater's donor antennato the base station and the distance from the handset to the repeater'sserver antenna. In some embodiments, base stations can communicate, to awireless device, the amount of power that is received in the UL signalfrom the wireless device to allow the wireless device to actively adjustthe UL power to less than the maximum power allowed at the base station.

As previously discussed, signal boosters are typically configured toamplify and/or filter cellular signals, including downlink (DL) anduplink (UL) signals, with limited communications with the base stationor the wireless device. For example, a signal booster typically does notinclude a modem to modulate or demodulate the signals that areamplified. Accordingly, the signal booster typically does not receiveany information from the base station regarding the UL power received atthe base station from an amplified UL signal communicated from thesignal booster.

In order to limit and control the amount of power transmitted in anuplink signal from a signal booster, the signal loss between the signalbooster and the base station can be estimated. The signal loss can bereferred to as the base station coupling loss (BSCL). This term is alsosometimes referred to as the booster station coupling loss. The basestation coupling loss is the coupling loss between the signal booster'sdonor port and the base station's input port.

Theoretically, the UL signal loss and the DL signal loss between basestation and signal booster is roughly equivalent. It should be notedthat the signal loss is frequency dependent. Accordingly, the UL signalloss can be estimated by receiving a pilot signal, a signal broadcastfrom in a DL from a base station at a known frequency and power. Thismeasurement can be referred to as the received signal strength indicator(RSSI). The amount of loss of the received pilot signal, relative to theknown transmitted power, can be used to estimate how much loss therewill be in a transmitted UL signal. Thus, the measured RSSI can be usedto estimate the BSCL. The UL signal gain at the signal booster can thenbe adjusted based on the estimated BSCL, to maximize the amount of powertransmitted while meeting the limitations of the maximum uplink signalpower received at the base station.

Differences between the way in which booster stations operate and theoperation of wireless devices, such as mobile stations or userequipment, can cause inaccuracies in the BSCL measurement at a cellularbooster station. These inaccuracies can cause significant differencesbetween the predetermined maximum uplink signal power level at the basestation, and the actual received uplink signal power level from thesignal booster UL signal. The differences typically reduce the UL signalpower level transmitted by the signal booster and limit the range ofwireless devices using the signal booster to communicate.

One difference between the operation of signal boosters and wirelessdevices is the bandwidth in which they operate. Wireless devices, suchas user equipment (UEs) or mobile stations (MSs) that are designed tocommunicate using cellular bands, typically communicate using a signalthat is narrow band relative to the signal boosters. For example, thedownlink band of 3GPP LTE band 2 is 60 MHz. However, a UE will use onlya small portion of that bandwidth. The UE bandwidth may be 1.4, 3, 5,10, 15, or 20 MHz.

In contrast, a signal booster is typically designed to operate over theentire bandwidth of a selected band, such as band 2, which has adownlink bandwidth of 60 MHz. The signal booster can simultaneouslyreceive multiple DL signals in a single band. A radio frequency detectoroperating at the signal booster will detect the combined power of all ofthe DL signals in the selected band. This will cause the received signalstrength indicator (RSSI), as measured at the signal booster, to begreater than the actual RSSI for a single user of the signal booster.The increased RSSI (decreased BSCL) of the DL signal power in theselected band at the signal booster will result in a reduced gain and/ornoise power applied to the UL signal of a user that is transmitted bythe signal booster, thereby limiting the range of the user.

In addition, the location of multiple base stations relative to thesignal booster can also cause inaccuracies in the BSCL measurement. Forexample, FIG. 2 shows a wireless device 210 in communication with asignal booster 220. The signal booster can receive signals from multiplebase stations, such as the relatively close base station 230 and therelatively distant base station 240.

Signal boosters 220 are typically employed to enable one or morewireless device 210 users to communicate with a relatively distant basestation 240. The distant base station can be used by the user's cellularsignal provider. However, another base station 230, operated by adifferent cellular signal provider, which is operating in the samefrequency band, may be located relatively close to the signal booster220. Downlink signals from the relatively close base station 230 willhave a much higher RSSI (lower BSCL) at the signal booster 220 than theDL signals from the relatively far base station 240. The RSSI or BSCLmeasurements of the combined DL signals from the relatively close 230and relatively far base stations 240 will result in significantlyreduced UL gain and/or noise power settings for the UL signalstransmitted from the signal booster 220 for a user of the relatively farbase station 240. If the RSSI of the DL signals from the close basestation 230 are sufficiently high, it can result in the gain and/ornoise power of the transmitted UL signal being set sufficiently low thatthe UL signal cannot be accurately received at the relatively far basestation 240.

Signal boosters, such as signal booster 220, also typically provideamplification of UL signals over a fairly broad spectrum relative to aUE or MS. For example, a signal booster may provide amplification of anUL signal over an entire 3GPP LTE band. The broadband amplification ofthe band, and not just a single signal, results in an amplification ofall of the noise in the band as well. The amplification of the noiseeffectively raises the noise floor for a receiver, such as a basestation. In order to ameliorate the effects of increasing the noisefloor, the Federal Communication Commission (FCC) in the United Stateshas issued an order, in FCC Report and Order 13-21, that sets thresholdlevels for uplink gain and noise levels.

In FCC Report and Order 31-21, the transmitted noise power in dBm/MHz ofconsumer boosters at their uplink and downlink ports shall not exceed−103 dBm/MHz—RSSI. Where RSSI (received signal strength indication) isthe downlink composite received signal power in dBm at the booster donorport for all base stations in the band of operation. RSSI is expressedin negative dB units relative to 1 mW. (2) The transmitted maximum noisepower in dBm/MHz of consumer boosters at their uplink and downlink portsshall not exceed the following limits: (i) Fixed booster maximum noisepower shall not exceed −102.5 dBm/MHz+20 Log 10 (Frequency), whereFrequency is the uplink mid-band frequency of the supported spectrumbands in MHz. (ii) Mobile booster maximum noise power shall notexceed—59 dBm/MHz.

Similarly, FCC Report and Order 31-21 limits the uplink gain in dB of aconsumer booster referenced to its input and output ports such that itshall not exceed −34 dB—RSSI+MSCL, where RSSI is the downlink compositereceived signal power in dBm at the booster donor port for all basestations in the band of operation. RSSI is expressed in negative dBunits relative to 1 mW. MSCL (Mobile Station Coupling Loss) is theminimum coupling loss in dB between the wireless device and input portof the consumer booster. MSCL is to be calculated or measured for eachband of operation and provided in compliance test reports.

In accordance with one embodiment, a signal booster can be configured tochannelize a DL signal received at the signal booster in a selectedband. Channelize, as used herein, can include filtering a selected bandto pass portions of the band, or block portions of the band, to reducethe RSSI (or increase the BSCL) of one or more DL signals that cause anundesirable reduction in UL gain and/or noise power of an uplink signalfor a user of the signal booster. An undesirable reduction in the ULgain and/or noise power is a reduction in the UL gain and/or noise powerof the UL signal transmitted by the signal booster for the user, whereinthe reduction in UL gain and/or noise power is used to protect thenetwork (i.e. base stations) when no additional protection is actuallynecessary. For example, a DL signal received from a close BS may resultin a relatively high RSSI. However, the booster may be boosting an ULsignal for transmission to a distant BS relative to the close BS.Removing, or substantially attenuating the signal from the close BS canresult in an undesirable reduction in the UL gain, while not actuallyprotecting the distant BS since a higher power UL gain can be used totransmit to the distant BS while staying within the parameters of theFCC.

While the FCC requirements are used as an example, they are not intendedto be limiting. Other governmental or industry standards may alsodesignate limits or suggestions for UL signal gain limitations for asignal booster. By more accurately measuring DL signals, the UL signalgain can be maximized relative to the governmental or industry limits orsuggestions.

Channelizing the DL and UL signals in selected bands at the signalbooster can reduce interference from other DL signals from a same basestation or different base stations and allow more accurate measurementsof BSCL for a selected user, thereby enabling the UL signals transmittedfrom the signal booster for the selected user to have an increased gainand increase the range over which the selected user can communicate. Inaddition, channelizing the UL signal can allow filtering that willreduce the noise power transmitted to base stations and allow the signalbooster to meet the specification requirements. Filtering of the ULsignal can typically occur at an equivalent location (i.e. channel) asis filtered in the DL signal. For example, in an FDD band, such as 3GPPLTE band 5, if the bottom 15 MHz of the DL spectrum for 3GPP LTE band 5is filtered to attenuate signals in those frequencies, the bottom 15 MHzof the UL spectrum for 3GPP LTE band 5 can also be similarly filtered.By filtering the UL signal, the noise floor can be effectively reduced,thereby enabling a base station, such as a 3GPP LTE eNodeB, to receivethe UL signal with a lower noise floor.

FIG. 3 illustrates several example embodiments that can be used tochannelize a downlink signal of a signal booster. In FIG. 3a , achannelization device 330 can be configured to receive a cellulardownlink signal from an outside antenna 310, filter the downlink signalto provide a channelized downlink signal, and output the channelizeddownlink signal to a signal booster 320. The channelization device 330can be passive or active. A passive channelization device can passivelyfilter the downlink signal for communication to a signal booster 320.

The signal booster 320 can receive an uplink signal via the insideantenna 312. If the RSSI value of the downlink signal is greater than athreshold value, which would require a reduction in gain and/or noisepower of the uplink signal, then the signal booster can use thechannelized downlink signal, or information regarding the channelizeddownlink signal, to reduce the RSSI value of the downlink signal andincrease a gain and/or noise power of an uplink signal. The uplinksignal can then be communicated to the base station using the outsideantenna 310. An active channelization device 330 can be configured toamplify uplink and/or downlink signals to compensate for any signal losscaused by the channelization device 330. Additional details of thechannelization device are discussed in more detail in the proceedingparagraphs.

An example of a channelized signal booster 340 is illustrated in FIG. 3b. The channelized signal booster 340 can comprise the functions of thechannelization device 330 integrated into the signal booster 320 toprovide a signal booster that is configured to channelize a downlinksignal to enable one or more channels to be filtered, or have acomponent of a BSCL value of the one or more channels removed from theoverall BSCL value, as previously discussed. Additional active solutionscan include the channelization and filtering of intermediate frequency(IF) signals associated with a received downlink signal, and the use ofdigital signal processing (DSP) to digitally filter the downlink signal.In addition, the outside antenna 310 can be actively tuned to reduce thecontribution of undesired signals to the BSCL value of the downlinksignal. These concepts will be described more fully in the proceedingparagraphs. FIG. 3c illustrates an example of a signal booster 320 withan active channelized inline box 350.

In another embodiment, the BSCL at the signal booster can be estimatedin other ways than using RSSI. For example, signal attenuation throughthe Earth's atmosphere can be calculated based on the distance thesignal travels. Accordingly, a distance from a signal booster to one ormore base stations can be estimated. A BSCL value can then be calculatedbased on the estimated distance. The gain and/or noise power of anuplink signal of the signal booster can then be adjusted, if necessary.For example, if the BSCL value is less than a threshold value, the gainand/or noise power can be adjusted.

The downlink signal received at the signal booster can be in in one ormore frequency bands. For example, the downlink signal can be located in3GPP LTE FDD bands 1-32 or TDD bands 33-44 based on the country orregion in which the signal booster is used. In the United States, thedownlink signal can be located in 3GPP LTE bands 2, 4, 5, 12, 13, 17 or25.

In one embodiment, the distance can be calculated from the signalbooster to the one or more base stations using a geographic coordinatesystem location of the signal booster and the one or more base stations.In another embodiment, the distance from the signal booster to the oneor more base stations can also be estimated using a pilot signal timing.In another embodiment, the distance from the signal booster to the oneor more base stations can be estimated based on the pilot signal timingand a difference in the geographic coordinate system location of thesignal booster and the one or more base stations. In one example, thegeographic coordinate system location of the signal booster and/or basestations can be estimated using a global positioning satellite (GPS)system.

After estimating the distance between the signal booster and the one ormore base stations, a signal loss over that distance can be calculated.The amount of signal loss that occurs in Earth's atmosphere is dependenton the frequency of the signal. In addition, the type of terrain atwhich the signal booster and one or more base stations are located cansignificantly affect the amount of signal loss. Different signal lossterrain models may be used depending on the terrain type. The type ofterrain can determine how much the signal is absorbed and/or reflectedby different types of geographic and/or manmade features. Models can bedesigned or used to account for different amounts of absorption andreflection that may occur between the signal booster and the one or morebase stations. For example, the signal loss terrain model may be modeledfor one or more of a country terrain, a flat terrain, a hilly terrain, asuburb terrain, a city terrain, a mountain terrain, a forest terrain,and a line of site terrain, and so forth.

In another embodiment, the BSCL contribution of one or more channels ina selected band of a downlink signal can be removed based on a locationof a base station relative to the signal booster. As previouslydiscussed, signal boosters are typically configured to communicate witha relatively distant base station. Different base stations oftencommunicate in different frequency channels within a selected frequencyband. Channelization filtering can be used to identify differentdownlink signals based on the channel (i.e. frequency) at which thedownlink signals are communicated. It can be assumed that downlinksignals associated with selected frequency channels in a band arecommunicated from a base station with a known geographic coordinate.Alternatively, based on the RSSI or BSCL of a selected channel, thelocation of the base station can be estimated. For instance, downlinkchannels with a relatively high RSSI power level can be assumed to beassociated with a relatively close base station. Conversely, downlinkchannels with a relatively low RSSI power level can be assumed to beassociated with a relatively distant base station.

In one example, a signal booster can be employed by a business orhomeowner that only uses wireless service provider A. The location ofthe base station for wireless service provider A can be relativelydistant to the signal booster. Downlink signals from the relativelydistant base station can be communicated in channel A of a selectedband. In addition, downlink signals transmitted by cellular serviceprovider B can be received at the signal booster on channel B of theselected band from a relatively close base station. It can be determinedthat none of the users of the business or homeowner use the signalbooster to communicate on channel B to wireless service provider B.Accordingly, the BSCL of the downlink signals transmitted on channel Bfrom the relatively close base station can be discounted. Thecontribution of the downlink channel B signals can be removed from abroadband RSSI measurement of the selected channel. Alternatively, anarrowband measurement can be performed that does not include thedownlink signals on channel B in the selected band. This cansignificantly reduce the RSSI measurements (or increase the BSCLmeasurement) and enable uplink signals communicated on channel A to havean increased gain and/or noise power level for communication to therelatively distant base station when the BSCL value for the channel A isless than a threshold value.

In another embodiment, a downlink signal can be measured at a pluralityof channels for a selected band to determine a base station couplingloss (BSCL) for the plurality of channels. In one embodiment, signals inthe plurality of channels can be measured using a comb filter to adddelayed versions of each signal to accommodate for reflections andrefractions of the signals as they travel between the base station andthe signal booster. The RSSI measurement of the combined signals in thecomb filter can enable a more accurate BSCL value to be determined foreach of the plurality of channels.

A base station can then be associated with each of the plurality ofchannels, based on the frequency of each channel (i.e. a base stationmay transmit at a known frequency), or the BSCL of each channel (i.e. alower BSCL infers a closer base station to the signal booster, and viceversa) and an estimated distance of each base station. A BSCL value foreach channel of the plurality of channels associated with a base stationcan be disregarded when a user is not communicating with the basestation. The BSCL value may be determined by only accounting fordownlink signals transmitted from base stations that are used by one ormore users of the signal booster.

Alternatively, a broadband measurement for a selected band can be madeto estimate BSCL, and the contributions of the BSCL made by channelsreceived from base stations for which users of the cellular signalbooster do not use can be subtracted from the total BSCL value. The gainand/or noise power of an uplink signal can then be adjusted if the BSCLvalue is less than a threshold value. In one embodiment, the gain and/ornoise power of the uplink signal of the signal booster can be adjustedbased on a lowest BSCL value of a station to which one or more users arecommunicating.

FIG. 4 provides one example of a channelization device 400 forincreasing signal booster gain at a signal booster. The channelizationdevice 400 comprises a first diplexer 402 configured to be coupled to afirst interface port and a second diplexer 404 configured to be coupledto a second interface port. In one embodiment, the first interface portcan be an outside antenna, such as outside antenna 310, and the secondinterface port can be an inside antenna, such as inside antenna 312. Thechannelization device 400 can include radio frequency connections toenable the channelization device 400 to be connected to the first and/orsecond interface ports, or other components such as a signal booster, asillustrated in FIG. 3a and FIG. 3 c.

The channelization device 400 can further comprise a controller 403 thatis configured to receive a gain reduction level of an uplink signal fromthe signal booster (i.e. 320) that is caused by a base station couplingloss value of the downlink signal. The controller 406 can be configuredto measure a channelized base station coupling loss (BSCL) value for oneor more channels in a channelized downlink signal and communicate thechannelized BSCL value to the signal booster 320 to allow the signalbooster to increase the gain and/or noise power based on the channelizedBSCL value. Alternatively, the controller can be integrated in thesignal booster, such as the channelized signal booster 340 shown in FIG.3.

The channelization device 400 can further comprise a channelized filter408. In the example illustrated in FIG. 4, the channelized filter 406 iscomprised of a first channelized duplexer 408 and a second channelizedduplexer 410. Switches 412, 414 can be used to create a bypass patharound the channelized filter 408 to allow an uplink signal or adownlink signal to bypass the channelized filter 406.

FIG. 5 provides another example of a channelization device 500 forincreasing signal booster gain at a signal booster. The channelizationdevice 500 comprises a first diplexer 502 that is configured to becoupled to a first interface port and a second diplexer 504 that isconfigured to be coupled to a second interface port. As in the exampleof FIG. 4, the channelization device 500 can be configured with radiofrequency connectors to enable the channelization device 500 to beconnected to the first and second interface ports, or other componentssuch as a signal booster, as illustrated in FIG. 3a and FIG. 3 c.

The channelization device 500 further comprises a third diplexer 512coupled to the first diplexer 502, and a fourth diplexer 514 coupled tothe second diplexer 504. A pass-through path is coupled between thethird diplexer and the fourth diplexer to allow signals to pass betweenthe first interface port and the second interface port when the BSCLvalue of the downlink signal is greater than a selected threshold value.A channelized filter 508 is located between the third and fourthdiplexers 512, 514.

In one embodiment, the channelized filter can be a dual-common port(DCP) multi-bandpass filter (MBF). The DCP MBF filter 508 can includetwo or more analog filters, such as bandpass filters (BPF), high pasfilters (HPF), or low pass filters (LPF), in a single package. Forexample, each of the BPFs within the multi-filter package can beconfigured to pass a selected frequency, such as an uplink band of aselected frequency band, or a downlink band of the selected frequencyband. The multi-filter package can have a first common port and a secondcommon port (e.g., on a left and right side of the multi-filter package,respectively). In an example in which the multi-filter package includestwo BPFs that are stacked together in a single package, a first commonport can have a first signal trace that connects the first common portto an input of a first BPF and an input of a second BPF. Similarly, asecond signal trace can connect a second common port to an output of thefirst BPF and an output of the second BPF. In this example, the two BPFscan be surface acoustic wave (SAW) or bulk-acoustic wave (BAW) filtersthat are positioned close to each other (e.g., less than 1 millimeter(mm) from each other), and the two BPFs can be designed such that one ofthe BPFs can have a lower return loss in a selected frequency band (i.e.passband), while the other BPF can have a higher return loss (or poorreturn loss) on that same frequency band (i.e. stopband). Filters formedusing other technologies, such as ceramic filters, may be locatedfarther apart.

In one example, an input signal can have a signal associated with aselected frequency band. For example, a band 1 uplink (UL) signal caninclude a signal within the 3GPP LTE band 2 UL frequency range. Amulti-filter package can include a band 2 UL bandpass filter, configuredto pass signals within a frequency range of the band 2UL range, andreject signals outside of this band. The multi-filter package can alsoinclude a band 4 UL bandpass filter, configured to pass signals within afrequency range of the 3GPP LTE band 4 UL frequency range, and rejectsignals outside of this band.

As an example, the multi-filter package can include a B2 UL BPF and a B4UL BPF. If the signal that enters the multi-filter package is a B2 ULsignal, the signal can pass through the B2 UL BPF in the multi-filterpackage due to the lower return loss that is designed in the B2 UL BPFfor the frequency range of the B2 UL signal. Similarly, if the signalthat enters the multi-filter package is a B4 UL signal, the signal canpass through the B4 UL BPF in the multi-filter package due to the lowerreturn loss that is designed in the B4 UL BPF for the frequency range ofthe B4 UL signal. In addition, if the B2 UL signal or the B4 UL signalwere to go to the B4 UL BPF or the B2 UL BPF, respectively, the ULsignal would get reflected back and would then pass through theappropriate UL BPF.

In one example, the multi-filter package can include electrically shortwires or signal traces that connect the first common port and the secondcommon port to the first and second BPFs. In other words, the path fromthe first common port to the input of the first and second BPFs, and thepath from the second common port to the output of the first and secondBPFs can be electrically short. In one example, if the wires or signaltraces were to become electrically long, the wires or signal traces cancreate phase and reflection problems. Thus, by keeping the wires orsignal traces electrically short, these problems can be avoided and thesignal can only travel on an incorrect path for a reduced period oftime.

In one example, the electrically short wires or signal traces in themulti-filter package can be shorter than 1/10^(th) or 1/20^(th) or1/100^(th) of a wavelength of the signal the electrically short wiresare carrying. In one example, a 1 GHz wavelength is 300 mm, and theelectrically short wires or signal traces can be shorter than 3 mm.Since the wires or signal traces are considerably shorter than thewavelength, an incoming signal can effectively see multiple paths at thesame time, and the incoming signal can travel on a path with lowerreturn loss or lower resistance.

In one example, the multi-filter package can include multiple separatebandpass filters, with each bandpass filter configured for a separatefrequency band. Each separate frequency band can have a guard bandbetween the frequency band (i.e. the frequency bands are non-adjacent).Each of the bandpass filters can be designed to have an input that isimpedance matched to a first common port, and an output that isimpedance matched to a second common port.

In another example, it can be difficult for multiple different bandpassfilters, each with different passbands, to each be impedance matched toa common port. To overcome that limitation, the multi-filter package caninclude one or more matching networks. For example, a matching networkcan be coupled to inputs of two or more BPFs in the multi-filterpackage. A separate matching network can be coupled to the outputs oftwo or more BPFs in the multi-filter package. The matching network(s)can each be a separate module that is external to the BPFs, but withinthe multi-filter package. The matching network(s) can include seriesinductors and/or shunt capacitors, which can function to impedance matchthe inputs of the BPFs in the multi-filter package to the first commonport and/or impedance match the outputs of the BPFs in the multi-filterpackage to the second common port. The impedance matching can be betweena common port and each individual BPF port. In other words, each BPF canbe matched to a common port, and not to other BPFs. The impedancematching provided by the matching network(s) can enable a signal totravel through a BPF on a lower return loss path in the multi-filterpackage and bypass a BPF on a higher return loss path of themulti-filter package. Depending on the combination of BPFs in themulti-filter package, the matching implementation can be designedaccordingly.

In one configuration, two or more sets of BPFs can be packaged togetheror connected to form a multi-common port multi-filter package (MCP MFP).For example, a first set of BPFs consisting of two or more BPFs can beconnected to a second set of BPFs consisting of one or more BPFs. Thefirst set of BPFs can include DL BPFs and the second set of BPFs caninclude UL BPFs, or vice versa. The multi-filter package can include afirst common port that connects to the first and second set of BPFs, asecond common port that connects to the first set of BPFs and a thirdcommon port that connects to the second set of BPFs. The wires or signaltraces that connect the first, second, and third common ports to eachBPF in the first and second sets of BPFs, respectively, can beelectrically short. In addition, the multi-filter package can include amatching network that is coupled to the first set of BPFs in themulti-filter package and/or a matching network that is coupled to thesecond set of BPFs in the multi-filter package. The input of each filterin the MCP MFP can be impedance matched to a common port, or impedancematched using a matching network that is coupled to a common port.

As an example, the multi-filter package can include a first set of BPFsthat includes a B2 UL BPF and a B4 UL BPF, as well as a second set ofBPFs that includes a B2 DL BPF and a B4 DL BPF. Due to the matchingnetwork(s) and the electrically short wires or signal traces, a signalthat enters the multi-filter package can pass through an appropriate BPFand bypass the other BPFs in the multi-filter package. For example, anUL signal will pass through one of the UL BPFs with a passband withinthe signal's band, and bypass the DL BPFs. Similarly, a DL signal willpass through one of the DL BPFs associated with the signal's band, andbypass the UL BPFs. Furthermore, due to the use of matching network(s)and the electrically short wires or signal traces, an UL signal can passthrough an appropriate UL BPF and bypass other UL BPFs in themulti-filter package, and similarly, a DL signal can pass through anappropriate DL BPF and bypass other DL BPFs in other frequency bands inthe multi-filter package.

In the example of FIG. 5, a first bandpass filter can be configured topass one or more channels in a selected band of a downlink signal. Asecond bandpass filter can be configured to pass one or more channels inthe selected band of an uplink signal.

For example, the DCP MBF 508, using bandpass filters, can be configuredto pass channel A and block channel B, where channel B representsdownlink signals from a relatively close base station. By filtering thedownlink signals in channel B, the BSCL for the selected band can beincreased (the RSSI can be decreased). When the BSCL is less than aselected threshold, the filtering can be used to increase the gainand/or noise power of an uplink signal for a signal booster.

In another embodiment, a user can select to pass channel A and block(i.e. filter) channel B, or block channel A and pass channel B using theDCP MBF 508. The determination of which channel to pass can depend onwhich channel a user of the cellular booster signal is using, and whichchannel may be causing inaccurate measurements of the BSCL.

In another embodiment, a selected band can be selectively filtered usinga plurality of bandpass filters. For example, four filters, each with abandpass of approximately 15 MHz, can be used to selectively filter aselected band with a bandwidth of approximately 60 MHz. One or more ofthe bandpass filters can be configured to pass channels operating withinthe 15 MHz band of the bandpass filter. The selection of the bands thatare passed may be selected based upon setup of a channelization device500. Alternatively, the selection may be actively determined andselected based on which channel(s) a user is communicating on, and whichchannel(s) are causing interference.

In one embodiment, a channelized bandpass filter can be configured tocommunicate one or more channels in a selected band to a signal booster.The signal booster can be configured to measure a BSCL value of the oneor more channels in the selected band of a downlink signal. The signalbooster can then set an uplink gain or a noise power of an uplink signalbased on the BSCL value of the one or more channels passed by thechannelized bandpass filter.

In another embodiment, the DCP MBF 508 can be configured as a notchfilter. A notch filter can be configured to filter an undesired downlinksignal, such as a downlink signal from a relatively close base station,as previously discussed. The use of a notch filter can be advantageousfor use in a band that includes many channels. The notch filter can bedesigned with a DCP MBF that comprises two or more bandpass filtersconfigured to filter a selected frequency band, or notch.

In another embodiment, the channelization device 500 can include one ormore amplifiers operatively coupled to the channelized filter 508 andconfigured to set a noise power and/or provide sufficient amplificationto the downlink signal to compensate for loss in the channelizationdevice 500. In one embodiment, the amplifiers can be further configuredto provide amplification to the downlink signal to compensate fordownlink signal loss that occurs between the channelization device and asignal booster, as shown in FIGS. 3a and 3 c.

In another embodiment, an active channelization device can be configuredto increase signal booster gain while maintaining network protections.The active channelization device can be configured as illustrated in anyof FIGS. 3a-3c . The active channelization device can provide achannelization device 330, such as illustrated in FIG. 3a , withapproximately 0 dB net gain (or enough gain to set a noise figure). Inone embodiment, the active channelization device can be an accessory toa standard, signal booster 120, as illustrated in FIG. 1.

Channelization, using an active channelization device, can be performedonly on bands of interest. The bands of interest can include bands thatare frequently used, or where a gain or noise power of an UL signal isfrequently reduced due to BSCL levels that are skewed by other downlinksignals, as previously discussed. In one embodiment, the channelizationbands and parameters can be user-selectable.

Attaching the channelization device 330, as shown in FIG. 3a , to anoutside antenna 310 side of a signal booster 320 can enable the signalbooster to react to a narrower RSSI bandwidth, thereby decreasing anetwork RSSI sensitivity. An active channelization device can be used toset a noise figure and to obtain more UL output power than a passivechannelization device.

In one embodiment, channelization device 330 can be an activechannelization device 330. The active channelization device 330 can beconfigured to communicate with a signal booster 320 to set UL gains andother desired parameters. In one embodiment, an active channelizeddevice can include a controller that is configured to receive a gainreduction level of an uplink signal from the signal booster that iscaused by a base station coupling loss value of the downlink signal. Thecontroller can then measure a channelized base station coupling loss(BSCL) value for one or more channels in a channelized downlink signaland communicate the channelized BSCL value to the signal booster toallow the signal booster to increase the gain and/or noise power basedon the channelized BSCL value. Alternatively, the active channelizationdevice 330 can amplify the uplink signal based on the channelized BSCLvalue and the received gain reduction level.

In another embodiment, the active channelized device can be an activechannelized inline device 350, as illustrated in FIG. 3c . The activechannelized inline device 350 can be located on an inside antenna 312side of a signal booster 320. The signal booster 320 can reduce gain dueto a BSCL measurement that is lower than a selected threshold, asrequired. The active channelized inline device 350 can be configured toprovide sufficient amplification to make up for network protection gainreductions by the signal booster 320.

In one example, the signal booster 320 can communicate, to the activechannelized inline device 350, a BSCL level, or other desiredmeasurement such as RSSI, and the amount of gain reduction to the ULsignal due to the BSCL level. The active channelized inline device 350can then provide channelization and amplification to restore the reducedgain, as previously discussed. Additional amplification can also beprovided to make up for path loss between the signal booster 320 and theactive channelized inline device 350.

In one embodiment, the channelized filter, such as the DCP MBF 508illustrated in FIG. 5, or another type of channelized filter, can becomprised of intermediate frequency (IF) filters, such as notch filters.The downlink signal can be down converted using a local oscillator (LO)to an intermediate frequency (IF). The IF notch filter can be configuredto allow most channels to pass. Notching out a strongest interferingdownlink signal can substantially solve most problems of ULamplification loss due to BSCL interference issues.

However, a single IF notch filter may not always achieve desiredspecification requirements, or have sufficient bandwidth to shift anotch around a selected band. For example, band 2 has a downlinkbandwidth of 65 MHz. In one embodiment, a varying IF notch filter designcan be used, as illustrated in FIG. 6.

In the example of FIG. 6, the IF filters can be designed to have almostas much bandwidth as the RF band does. This enables the booster or userto adjust the width and spectral location of the notch filter. Thevarying notch filter can be designed to optimize the notch location andminimize the bandwidth of the notch (thereby allowing more channels topass). In a wideband mode, the signal booster can detect whether it hasreduced gain due to DL network protection requirements, as previouslydiscussed. The signal booster can scan the RF band and find thefrequency of a selected downlink signal with an amplitude greater than aselected threshold value. The signal booster can set an IF notch overthe selected downlink signal and slowly increase the notch width untilthe booster is no longer in a reduced gain mode. The IF filters can bethe same center frequency, or different center frequencies. Thefrequencies of the local oscillator 1 (LO1) and LO2 can be adjusted toprovide a desired notch width. The local oscillators, LO1 and LO2 can bethe same as LO3 and LO4 if the downlink IF filter center frequency isshifted.

FIG. 7 provides an example of a switching IF notch filter. As in theexample of FIG. 6, the IF filters can have almost as much bandwidth asthe RF band does. The switched IF center frequencies can be offset tocreate a notch between a main IF filter. This enables the IF signalbooster or a user to adjust a width of the IF notch filter, by switchingbetween IF filters, as well as a spectral location of the notch.

To optimize a notch location and minimize its bandwidth, the signalbooster can detect, in a wideband mode, whether the signal booster hasreduced a gain and/or a noise power of an UL signal due to networkprotection requirements. The cellular signal amplifier can scan the RFband and find the frequency of a selected channel, such as a channelwith an amplitude greater than a selected threshold. The cellular signalamplifier can then set an IF notch filter over the selected channel,with the IF notch filter having a minimum notch width to avoid any gainreduction for network protection.

In one embodiment, LO1 in FIG. 7 can be the same frequency as LO2 if thedownlink IF filter center frequency is shifted. The same concept canwork without the splitters, but then the notch width cannot be varied. Agreater number or fewer number of IF filters can be added to theswitched section to allow for more notch widths. The IF filters can beconfigured in a DCP MBF configuration to remove the splitter if thereare no switched IF filters.

The examples of FIG. 6 and FIG. 7 have been described with respect tothe embodiment of FIG. 3b , in which the channelization filters andamplifiers are integrated into the cellular signal amplifier. However,the varying IF notch filter and the switching IF notch filter can alsobe designed to operate in the active channelization device 330 or theactive channelized inline device 350. In each of these embodiments, theactive channelization device 330 or the active channelized inline device350 can be configured to communicate with the signal booster 320.

In another embodiment, RF channelized filters can be integrated in thesignal booster 320. A switch can be used to provide for various channeloptions. A default option may be wideband (i.e. no channelization). Thesignal booster can automatically or manually change channels or stay ina wideband mode. In an automated mode, the signal booster can: detect awideband BSCL value or an RSSI value for a downlink signal; switch in achannelized filter; detect the channelized DL BSCL or RSSI value; repeatfor all channelization options; and select the channelization filteroption that maximizes performance. The use of RF channelized filter canbe superior to that of a passive channelization device since thedownlink noise figure and uplink output power can be preserved.

FIG. 8 provides an example of a DCP MBF multi-band RF or IF notchfilter. In this example, an RF notch filter can be implemented bycreating a DCP MBF module 810 with two narrowband bandpass filters 812,814. For example, for an uplink Band 2 notch, one bandpass filter can beconfigured at 1850-1865 MHz, and the other bandpass filter can beconfigured at 1880-1910 MHz. This would effectively notch out 1870-1875MHz. This concept can be used in a passive channelization device by alsoadding a DL DCP MBF notch bandpass filter, thereby creating four filtersin the same DCP MBF package, as shown at 816. The notch filter can bemoved around by switching between multiple DCP MBF modules, as shown in818.

FIGS. 9a-9c illustrate an example of an active solution. It should benoted that FIGS. 9a-9c illustrate a single circuit diagram, which hasbeen broken into three sections for purposes of illustration. Thesections of the circuit that have been divided are illustrated showingsection A and section B in FIG. 9a , which adjoin with section A andsection B, respectively, in FIG. 9b . Similarly, section C and section Din FIG. 9b adjoin with section C and section D, respectively, in FIG. 9c.

In the example of FIG. 9a-9c , a dual-band, non-simultaneous channelizeddevice 900 is disclosed. In one example embodiment, the dual-band devicecan enable channelization of two different bands. The use of anon-simultaneous channelized device can reduce costs by switching inonly one band at a time. For example, band 5 and band 28 may both bechannelized. The channelized device 900 can switch betweenchannelization of band 5 or band 28. The switching may be performedmanually, or may be automated.

For example, in one embodiment, automated switching between twochannelized bands may be performed by detecting a wideband downlinkreceived signal strength indicator (RSSI). A channelized filter for aselected band, such as band 5, may then be switched in, and achannelized downlink RSSI can be measured for the selected band. Achannelized filter for an additional band, such as band 28, may then beswitched in, and a channelized downlink RSSI for the additional band canbe measured. The channelized filter that maximizes performance (i.e.wideband (no channelization), channelized B5, or channelized B28) canthen be selected. While this example is for bands 5 and 28, it is notintended to be limiting. Any of bands 1-44 may be channelized, aspreviously discussed. In addition, more than 2 bands may be incorporatedin a channelized device.

In the example of FIG. 9a-9c , the dual band, non-simultaneouschannelized device 900 can be integrated into the channelized signalbooster 320, the active channelization device 330, or the active inlinechannelized device 350 of FIG. 3. The dual-band, non-simultaneouschannelized device can be configured to allow switching between bands toidentify a strongest downlink interfering signal and then providefiltering to reduce an amplitude of the interfering signal. In thisexample, both UL and DL can be analyzed.

In one example, 20 MHz IF filters can be used for 3GPP LTE Band 5 (B5).Two IF filters can be used to provide a notch filter for 835 MHz to 845MHz. However, two synthesizers are used to perform this action. Theembodiment of FIG. 9 assumes only one IF filter is needed in series. Theswitching between bands can be accomplished using common microcontrollerpins to speed up switching.

FIGS. 10a-10c illustrates another active solution, comprising achannelized DCP MBF implementation. It should be noted that FIGS.10a-10c illustrate a single circuit diagram, which has been broken intothree sections for purposes of illustration. The sections of the circuitthat have been divided are illustrated showing section A and section Bin FIG. 10a , which adjoin with section A and section B, respectively,in FIG. 10b . Similarly, section C and section D in FIG. 10b adjoin withsection C and section D, respectively, in FIG. 10 c.

With the use of a DCP MBF architecture, as illustrated in the example ofFIG. 10a-10c , multiple bands can be channelized and operate at the sametime. Switching between different bands is not required. DCP MBFband-sharing can be used to significantly reduce the cost ofimplementation. Synthesizers may be shared since the signals are all inone signal path. DCP MBF IF filters can be used as well. It can beassumed that only one IF filter is needed in series.

In one example, a DCP MBF notch filter for a band, such as 3GPP LTE Band25, can have the following specifications:

Frequency Parameter (MHz) Units Spec Low Band Response Passband#11850-1865 dB <3 Insertion Loss Passband#2 1890-1915 dB <3 Insertion LossPassband#1 1850-1865 dB >10 Return Loss Passband#2 1890-1915 dB >10Return Loss Attenuation 1870-1885 dB As much as possible 1930-1935dB >30 1935-1995 dB >35 High Band Response Passband#1 1930-1945 dB <3Insertion Loss Passband#2 1970-1995 dB <3 Insertion Loss Passband#11930-1945 dB >10 Return Loss Passband#2 1970-1995 dB >10 Return LossAttenuation 1950-1965 dB As much as possible 1910-1915 dB >30 1850-1910dB >35 Power into either W >1 port

The notch filter can be configured to substantially filter a selectedsignal in B25. Similarly, notch filters in other bands can be used toremove selected channels received in the DL signal to decrease the RSSIin the DL signal, thereby allowing the UL signal gain to be increased atthe signal booster.

As illustrated in FIGS. 11a-11c , a quadplexer may be used to avoiddiplexer losses on the front end. The use of the quadplexer can alsoincrease output power by 3 dB and decrease the noise figure by 3 dB. Inone embodiment, diplexers can be used at the bandpass ports to isolatethe filters.

In another embodiment, an active channelization device can beimplemented using a digital signal processor (DSP) to digitize andchannelize the broadband downlink signal and filter selected channelswithin the downlink signal to optimize gain for each channel based onnetwork protection. In one embodiment, each channel in the band can havea different gain level due to the DSP filter.

FIGS. 12a and 12b provide examples of channelization using a digitalsignal processor (DSP), such as a field programmable gate array, oranother type of DSP. FIG. 12a illustrates a downlink path for a signalbooster in which one or more signals transmitted from one or more basestations 1202 can be received at an antenna port 1204 of the signalbooster as a broadband signal. The broadband signal can be downconverted, filtered, amplified, and digitized using an analog to digitalconverter. The digitized signal can then be channelized using the DSP1206. One or more channels in the digital signal can then be removedusing the DSP 1206 to reduce an RSSI of the downlink and enable the gainof the UL signal to be increased by the signal booster.

Similarly, FIG. 12b illustrates a signal path for the signal booster inwhich the downlink filtered digital signal can be converted to an analogsignal using a digital to analog converter, upconverted, and sent to anantenna port 1210 for transmission to one or more UEs 1208. The signalbooster can then provide greater gain to the UL signal from the UE(s)1208 based on the decreased RSSI.

In another example, antenna tuning can be used to reduce RSSI ofselected channels in a band in order to maximize the gain of the ULsignal. In one embodiment, an antenna with a rotating motor canauto-direct the antenna direction to avoid reducing gain by reducing theRSSI contribution of selected interfering channels. In anotherembodiment, an antenna can be selected from a plurality of antennas. Theantenna that results in the highest UL gain, due to a lowest RSSI valueof a broadband signal can be selected. In another embodiment, activebeam steering can be used with an array of antennas to minimize theeffects of one or more interfering DL channels within a band. In anotherexample, an antenna can be tuned to a null of an undesired DL channelwithin the band. The antenna may use switched capacitor and inductorbanks. The tuned antenna could be automated, which may requirecommunication with the signal booster. Alternatively, the antenna couldhave its own detectors and microcontroller that can be used to determinewhat needs to be channelized and how to do it.

FIG. 13 illustrates an exemplary channelization device 1340 in awideband signal booster 1300 (or wideband repeater or bi-directionalamplifier). The channelization device 1340 can include a plurality ofswitchable signal paths operable to perform channelized passivefiltering of signals in defined bands. In addition, the channelizationdevice 1340 can include a plurality of switchable pass through signalpaths operable to pass through signals in the defined bands withoutfiltering of the signals. In other words, the switchable pass throughsignal paths can bypass the switchable signal paths that perform thechannelized passive filtering of the signals. The channelization device1340 can be configured to perform passive filtering of signals with noamplification of the signals. The channelization device 1340 can includea variable attenuator for each defined band to enable separate signalattenuation for each defined band. In addition, the channelizationdevice 1340 can operate in series with the wideband signal booster 1300.

In one example, the channelization device 1340 can be a passivechannelization box that is manually or automatically adjustable toattenuate one signal that is passing through while not attenuatinganother signal. The channelization device 1340 can perform dynamicallyfiltering of signals, as opposed to a statically configured filter box(as shown in the channelization box of FIG. 4). In the example of FIG.4, inserting the channelization box would produce a given set ofconditions, and a differently produced box would have to be selected inorder to achieve a different type of configuration. In contrast, thechannelization device 1340 shown in the example of FIG. 13 is configuredto be switchable to switch in/out a wide variety of different signalpaths and/or pass through signal paths. The channelization device 1340can be configurable on-the-fly, as it can be user selectable withouthaving to disconnect the system and change out the filter combinations.

In one example, the plurality of switchable signals paths can performthe channelized passive filtering of the signals in the defined bandswhen the wideband signal booster 1300 is exposed to a near-far basestation scenario. The plurality of switchable pass through signal pathscan pass through the signals in the defined bands without filtering ofthe signals while bypassing the plurality of switchable signals pathsthat perform the channelized passive filtering when the wideband signalbooster 1300 is not exposed to the near-far base station scenario.

In a typical near-far base station scenario, a UE (e.g., a UE that isconnected to the wideband signal booster 1300) can detect a signal withan increased RSSI from a base station located relatively near to the UE,and due to the signal with the increased RSSI, the UE may not detect asignal with a decreased RSSI (or not detect the signal at all) from abase station located relatively far from the UE. In other words, the UEcan detect a stronger signal from the relatively near base station,which makes it difficult for the UE to detect a weaker signal from therelatively far base station. In one example, if both the relatively farbase station and the relatively near base station transmit signalssimultaneously at equal signal powers, then due to the inverse squarelaw, the UE can receive more power from the nearer base station. Sinceone base station's transmitted signal is noise for the other basestation, the signal-to-noise ratio (SNR) for the relatively far basestation can be significantly lower, which makes signals transmitted fromthe relatively far base station difficult to detect at the UE. Thus, thenear-far problem is one of detecting or filtering out a weaker signalamongst stronger signals.

As shown in FIG. 13, the channelization device 1340 can becommunicatively coupled to an outside antenna 1310 of the widebandsignal booster 1300 and an inside antenna 1332 of the wideband signalbooster 1300. The outside antenna 1310 can communicate signals with abase station (not shown) and the inside antenna 1332 can communicatesignals with a mobile device (not shown). The channelization device 1340can include a first antenna port 1303 communicatively coupled to theoutside antenna 1310 of the wideband signal booster 1300, as well as asecond antenna port 1305 communicatively coupled to the inside antenna1332 of the wideband signal booster 1300.

In one example, the channelization device 1340 can include a firstdiplexer 1312 and a fourth diplexer 1330. The first diplexer 1312 can becommunicatively coupled to the outside antenna 1310 and the fourthdiplexer 1320 can be communicatively coupled to the inside antenna 1332.In one example, the first diplexer 1312 and the fourth diplexer 1330 canbe high band diplexers. Alternatively, the first diplexer 1312 and thefourth diplexer 1330 can be low band diplexers. The high band diplexerscan pass high band signals and filter out low band signals, whereas thelow band diplexers can pass low band signals and filter out high bandsignals.

In one example, the channelization device 1340 can include a seconddiplexer 1314 and a third diplexer 1328. The second diplexer 1314 can becommunicatively coupled to the first diplexer 1312 and the thirddiplexer 1328 can be communicatively coupled to the fourth diplexer1330. In one example, the plurality of switchable signal paths and theplurality of switchable pass through signal paths can be configuredbetween the second diplexer 1314 and the third diplexer 1328. Theplurality of switchable signal paths can perform passive filtering ofsignals in defined bands, whereas the plurality of switchable passthrough signal paths can pass through signals in the defined bandswithout filtering of the signals.

In one example, a switchable signal path in the plurality of switchablesignal paths can include a channelized analog RF bandpass filter. Thechannelized analog RF bandpass filter can include a downlink analog RFbandpass filter to filter one or more channels in a selected band of adownlink signal. In addition, the channelized analog RF bandpass filtercan include an uplink analog RF bandpass filter to filter one or morechannels in a selected band of an uplink signal.

In one example, a switchable signal path in the plurality of switchablesignal paths can include a dual-common port multi-bandpass filter forfiltering a signal in a selected channel of a defined band. In thisexample, switchable signal path(s) can be between the second duplexer1314 and the third diplexer 1328. For example, a first switchable signalpath can include a Band X Channel A DCP MBF 1316 and a second switchablesignal path can include a Band X Channel B DCP MBF 1318. In thisexample, the first and second switchable signal paths can be for thesame band (e.g., Band X), but for different channels within the band(e.g., Channel A and Channel B). In this example, the channelizationdevice 1340 can also include a switchable pass through signal path forthe same band (e.g., Band X).

In one example, a switchable signal path in the plurality of switchablesignal paths can include one or more duplexers for filtering a signal ina defined band. In this example, switchable signal path(s) can bebetween the second duplexer 1314 and the third diplexer 1328. Forexample, a first switchable signal path can include a first Band Yduplexer 1320 and a second Band Y duplexer 1322, whereas a secondswitchable signal path can include a first Band Z duplexer 1324 and asecond Band Z duplexer 1326. In this example, the first and secondswitchable signal paths can be for different bands (e.g., Band Y versusBand Z). Based on the two separate duplexers for each switchable signalpath, signals in both the downlink and the uplink can be filteredaccordingly. In this example, the channelization device 1340 can alsoinclude a switchable pass through signal path for Bands Y and Z (i.e., aBand Y-Z pass through signal path).

In one configuration, the plurality of switchable signal paths and theplurality of switchable pass through signal paths can be dynamicallyconfigured based on an instruction received from a controller 1307 ofthe wideband signal booster 1300. In other words, the controller 1307can dynamically configure certain signal paths and/or pass throughsignal paths to be switched on (which causes other signal paths to beswitched off). For example, the wideband signal booster 1300 can includea detector (not shown) to detect the power levels of signals, and thisinformation can be provided to the controller 1307. Based on certainpower levels, the controller 1307 can instruct certain signal pathsand/or pass through signal paths to be switched on. In this example, theswitchable signal paths and the switchable pass through signal paths canbe automatically configured by the controller 1307 in the widebandsignal booster 1300.

In another configuration, the plurality of switchable signal paths andthe plurality of switchable pass through signal paths can be dynamicallyconfigured based on an instruction received from a user of the widebandsignal booster 1300. In this example, the switchable signal paths andthe switchable pass through signal paths can be manually configured bythe user.

For example, based on a manual instruction received from the user, onB5, signals on Channel A can be passed and signals on Channel B can befiltered. As another example, on B12-13, B12 signals can be passed andB13 signals can be filtered. As yet another example, both B12 and B13signals can be passed via a bypass path.

In yet another configuration, the plurality of switchable signal pathsand the plurality of switchable pass through signal paths can bedynamically configured based on an instruction received from a remoteserver. In this example, the switchable signal paths and the switchablepass through signal paths can be remotely configured via the remoteserver.

In one configuration, the switchable signal paths and the switchablepass through signal paths can be operable for defined bands. The definedbands can include high bands and/or low bands from the 3GPP LTE set ofoperating bands. Examples of the high bands include: 3GPP LTE band 4(B4) or band 25 (B25). Examples of the low bands include: 3GPP band 5(B5), band 12 (B12) or band 13 (B13).

FIG. 14 illustrates an exemplary channelization device 1440 in awideband signal booster 1400 (or wideband repeater). The channelizationdevice 1440 can be configured to perform passive filtering of signalswith no amplification of the signals. The channelization device 1440 canperform passive filtering with no active gain blocks. The channelizationdevice 1440 can include multiple bands/channels and multiple passthrough paths that can be switched as desired. The channelization device1440 can serve to dynamically filter signals in different bands or passthrough signals in different bands, as opposed to a staticchannelization device (as shown in FIG. 4).

In one example, the channelization device 1440 can be communicativelycoupled to an outside antenna 1410 of the wideband signal booster 1400and an inside antenna 1432 of the wideband signal booster 1400. Thechannelization device 1440 can include a first diplexer 1412, a seconddiplexer 1414 (e.g., a 700/800 MHz diplexer), a third diplexer 1428(e.g., a 700/800 MHz diplexer) and a fourth diplexer 1430.

In one example, a plurality of switchable signal paths can be betweenthe second diplexer 1414 and the third diplexer 1428. For example, theswitchable signal paths can include a B5 Channel, a DCP MBF 1416, or aB5 Channel B DCP MBF 1418, respectively. In another example, theswitchable signal paths can include a pair of B12 duplexers 1420, 1422or a pair of B13 duplexers 1424, 1426, respectively. The switchablesignal path with the B12 duplexers can pass B12 signals and attenuate orfilter out signals in other bands, whereas the switchable signal pathwith the B13 duplexers can pass B13 signals and attenuate or filter outsignals in other bands. In addition, a plurality of switchable passthrough signal paths can be between the second diplexer 1414 and thethird diplexer 1428. For example, the switchable pass through signalpaths can include a B5 pass through signal path and/or a B12-13switchable pass through signal path.

In one example dual-common port (DCP) multi-bandpass filter (MBF) can beused for B5, B12, B13, and so on. In addition, duplexers can be used forB5, B12, B13, and so on.

In one example, the second diplexer 1414 (e.g., a 700/800 MHz diplexer)and the third diplexer 1428 (e.g., a 700/800 MHz diplexer) areapplicable to the low bands. However, in an alternative configuration,the channelization device 1440 can include diplexers that are applicableto the high bands (e.g., B4 and B25).

While various embodiments described herein, and illustrated in FIGS.1-15, have been described with respect to a cellular signal amplifierwith an outside antenna and an inside antenna, this is not intended tobe limiting. Channelization of downlink signals in order to increaseBSCL values to reduce network sensitivity can also be accomplished usinga handheld booster, as illustrated in FIG. 15. The handheld booster caninclude an integrated device antenna and the integrated node antennathat are typically used in place of the indoor antenna and outdoorantenna, respectively.

EXAMPLES

The following examples pertain to specific technology embodiments andpoint out specific features, elements, or actions that can be used orotherwise combined in achieving such embodiments.

Example 1 includes a method for increasing signal booster gain whilemaintaining network protections, comprising: estimating a distance fromthe signal booster to one or more base stations; calculating a basestation coupling loss (BSCL) value at a frequency band of a downlinksignal based on the estimated distance; and adjusting one or more of again and a noise power of an uplink signal of the frequency band at thesignal booster based on the BSCL value to maintain the networkprotections.

Example 2 includes the method of Example 1, further comprisingcalculating the BSCL value of the downlink signal at one or more bandsselected from third generation partnership project (3GPP) long termevolution (LTE) frequency bands: 2, 4, 5, 12, 13, 17, or 25.

Example 3 includes the method of any of Examples 1 to 2, furthercomprising calculating the BSCL value of the downlink signal at one ormore bands selected from: third generation partnership project (3GPP)long term evolution (LTE) frequency division duplex (FDD) bands 1through 33; or 3GPP LTE time division duplex (TDD) bands 34 through 44.

Example 4 includes the method of any of Examples 1 to 3, furthercomprising adjusting one or more of the gain and the noise power of theuplink signal of the frequency band at the signal booster when the BSCLvalue is less than a threshold value to maintain the networkprotections.

Example 5 includes the method of any of Examples 1 to 4, whereinestimating the distance further comprises one or more of: calculatingthe distance from the signal booster to the one or more base stationsusing a geographic coordinate system location of the signal booster anda geographic coordinate system location of the one or more basestations; or estimating the distance from the signal booster to the oneor more base stations using a pilot signal timing; or estimating thedistance from the signal booster to the one or more base stations basedon the pilot signal timing and a difference in the geographic coordinatesystem location of the signal booster and the one or more base stations.

Example 6 includes the method of any of Examples 1 to 5, furthercomprising determining a source base station of a selected downlinksignal received at the signal booster by comparing the calculateddistance of the one or more base stations and the estimated distance ofthe selected downlink signal using the pilot signal timing to identify asubstantially similar distance.

Example 7 includes the method of any of Examples 1 to 6, furthercomprising: determining a geographic location of the signal boosterusing a global positioning system; determining a geographic location ofthe one or more base stations using a global positioning system; andestimating the distance between the signal booster and the one or morebase stations based on the determined geographic locations.

Example 8 includes the method of any of Examples 1 to 7, furthercomprising calculating the base station coupling loss (BSCL) value atthe frequency band of the downlink signal over the estimated distanceusing an estimated loss per distance of a signal at the frequency bandtraveling through the earth's atmosphere.

Example 9 includes the method of any of Examples 1 to 8, furthercomprising calculating the base station coupling loss (BSCL) value atthe frequency band of the downlink signal based on a signal loss terrainmodel for a location of the signal booster and the one or more basestations.

Example 10 includes the method of any of Examples 1 to 9, wherein thesignal loss terrain model is for one or more of a country terrain, aflat terrain, a hilly terrain, a suburb terrain, a city terrain, amountain terrain, a forest terrain, or a line of site terrain.

Example 11 includes a method for increasing signal booster gain whilemaintaining network protections using channelization, comprising:measuring a downlink signal at a plurality of channels for a selectedband to determine a base station coupling loss (BSCL) at each of theplurality of channels; identifying a closest channel of the plurality ofchannels associated with a base station that is located nearest to thesignal booster; determining a base station coupling loss (BSCL) valuefor the closest channel; and adjusting one or more of a gain and a noisepower of an uplink signal of the signal booster based on the BSCL valueof the closest channel to maintain the network protections.

Example 12 includes the method of Example 11, further comprisingadjusting one or more of the gain and the noise power of an uplinksignal of the signal booster based on the BSCL value of the closestchannel when the BSCL value for the closest channel is less than athreshold value

Example 13 includes the method of any of Examples 11 to 12, furthercomprising measuring the downlink signal at the plurality of channels inone or more of third generation partnership project (3GPP) long termevolution (LTE) frequency bands: 2, 4, 5, 12, 13, 17, or 25.

Example 14 includes the method of any of Examples 11 to 13, furthercomprising measuring the downlink signal at the plurality of channels inone or more bands selected from: third generation partnership project(3GPP) long term evolution (LTE) frequency division duplex (FDD) bands 1through 33; or 3GPP LTE time division duplex (TDD) bands 34 through 44.

Example 15 includes the method of any of Examples 11 to 14, furthercomprising identifying the closest channel of the plurality of channelsthat is associated with the base station that is located nearest to thesignal booster by determining a signal with a highest received signalstrength indicator (RSSI) as the closest channel.

Example 16 includes the method of any of Examples 11 to 15, furthercomprising using a comb filter to receive the plurality of channels toenable delayed versions of each channel to be combined to determine thesignal with the highest RSSI.

Example 17 includes the method of any of Examples 11 to 16, furthercomprising removing a BSCL contribution of one or more signals broadcastin the plurality of channels from a broadband BSCL value of the downlinksignal based on one of a frequency range of the plurality of channelsand a BSCL value of each of the plurality of channels.

Example 18 includes at least one machine readable storage medium havinginstructions embodied thereon for increasing signal booster gain usingchannelization while maintaining network protections, the instructionswhen executed by one or more processors, at a channelization device orat a signal booster, perform the following: measuring a downlink signalat a plurality of channels for a selected band to determine a basestation coupling loss (BSCL) for the plurality of channels; determininga base station associated with each of the plurality of channels;disregarding a BSCL value for each channel of the plurality of channelsassociated with a base station when a signal booster user is notcommunicating with the base station; and adjusting one or more of a gainand a noise power of an uplink signal of the signal booster based on aselected BSCL value of a base station to which a user is communicatingwhile maintaining the network protections.

Example 19 includes the at least one machine readable storage medium ofExample 18, further comprising instructions that, when executed, performthe following: measuring the downlink signal at the plurality ofchannels in one or more of third generation partnership project (3GPP)long term evolution (LTE) frequency bands: 2, 4, 5, 12, 13, 17, or 25.

Example 20 includes the at least one machine readable storage medium ofany of Examples 18 to 19, further comprising instructions that, whenexecuted, perform the following: measuring the downlink signal at theplurality of channels in one or more bands selected from: thirdgeneration partnership project (3GPP) long term evolution (LTE)frequency division duplex (FDD) bands 1 through 33; or 3GPP LTE timedivision duplex (TDD) bands 34 through 44.

Example 21 includes the at least one machine readable storage medium ofany of Examples 18 to 20, further comprising instructions that, whenexecuted, perform the following: adjusting one or more of the gain andthe noise power of the uplink signal of the signal booster based on theselected BSCL value, wherein the selected BSCL value is a lowest BSCLvalue of a base station to which one or more users are communicating.

Example 22 includes the at least one machine readable storage medium ofany of Examples 18 to 21, further comprising instructions that, whenexecuted, perform the following: measuring a broadband downlink signalat the signal booster to determine a broadband base station couplingloss (BSCL) at the signal booster; adjusting the broadband BSCL based onthe disregarded BSCL value of each channel of the plurality of channelsassociated with a base station when a signal booster user is notcommunicating with the base station; and setting an uplink gain value ofthe signal booster based on the adjusted broadband BSCL.

Example 23 includes a channelization device for increasing signalbooster gain while maintaining network protections, the channelizeddevice comprising: a first diplexer configured to be coupled to a firstinterface port; a second diplexer configured to be coupled to a secondinterface port; and a channelized bandpass filter comprising a downlinkfilter configured to filter one or more channels in a selected band of adownlink signal and an uplink filter configured to filter one or morechannels in a selected band of an uplink signal.

Example 24 includes the channelization device of Example 23, wherein thechannelized bandpass filter is configured to communicate the one or morechannels in the selected band to the signal booster to enable the signalbooster to: measure a base station coupling loss (BSCL) value for theone or more channels in the selected band of the downlink signal; andset an uplink gain or a noise power of an uplink signal based on theBSCL value of the one or more channels.

Example 25 includes the channelization device of any of Examples 23 to24, wherein the channelized bandpass filter is configured tosubstantially attenuate a channel with a base station coupling loss(BSCL) value that is less than a threshold BSCL value.

Example 26 includes the channelization device of any of Examples 23 to25, wherein the channelization bandpass filter is a dual-common port(DCP) multi-bandpass filter (MBF) that includes two or more bandpassfilters in a single package, wherein a first bandpass filter in the DCPMBF is configured for an uplink signal, and a second bandpass filter inthe DCP MBF is configured for the downlink signal.

Example 27 includes the channelization device of any of Examples 23 to26, further comprising: a third diplexer coupled to the channelizedbandpass filter and located between the first diplexer and thechannelized bandpass filter; a fourth diplexer coupled to thechannelized bandpass filter and located between the second diplexer andthe channelized bandpass filter on an opposite side of the channelizedbandpass filter relative to the third diplexer; and a pass-through pathcoupled between the third diplexer and the fourth diplexer to allowsignals to pass between the first interface port and the secondinterface port when the BSCL value for each of the one or more channelsis greater than a threshold value.

Example 28 includes the channelization device of any of Examples 23 to27, wherein the selected band is a third generation partnership project(3GPP) long term evolution (LTE) frequency band 2, 4, 5, 12, 13, 17, or25.

Example 29 includes the channelization device of any of Examples 23 to28, wherein the selected band is selected as one or more of: a thirdgeneration partnership project (3GPP) long term evolution (LTE)frequency division duplex (FDD) band 1 through 33; or a 3GPP LTE timedivision duplex (TDD) band 34 through 44.

Example 30 includes the channelization device of any of Examples 23 to29, further comprising one or more amplifiers operatively coupled to thechannelized bandpass filter and configured to set a noise power andprovide sufficient amplification to the downlink signal to compensatefor loss in the channelization device.

Example 31 includes the channelization device of any of Examples 23 to30, wherein the one or more amplifiers are further configured to provideamplification to the downlink signal to compensate for downlink signalloss that occurs between the channelization device and the signalbooster.

Example 32 includes a channelization device for assessing networksensitivity of a signal booster, the channelized device comprising: adownlink signal path including at least one downlink channelized filterconfigured to block at least one channel to enable an uplink gain of thesignal booster to be increased; and an uplink signal path including atleast one uplink channelized filter.

Example 33 includes the channelization device of Example 32, furthercomprising: a first diplexer configured to be coupled to a firstinterface port; a second diplexer configured to be coupled to a secondinterface port; and a pass-through path coupled between the first andsecond diplexer; wherein the downlink channelized filter and the uplinkchannelized filter are communicatively coupled to the first diplexer andthe second diplexer.

Example 34 includes the channelization device of any of Examples 32 to33, wherein the uplink channelized filter and the downlink channelizedfilter are comprised of one or more of a duplexer, a bandpass filter, anotch filter, a dual-common port (DCP) multi-bandpass filter (MBF), or amulti-common port (MCP) multi-bandpass filter (MBF).

Example 35 includes a channelization device for increasing signalbooster gain while maintaining network protections, the channelizeddevice comprising: a first diplexer configured to be coupled to a firstinterface port; a second diplexer configured to be coupled to a secondinterface port; and a channelized notch filter configured to filter oneor more channels in a selected band of a downlink signal.

Example 36 includes the channelization device of Example 35, wherein thechannelized notch filter is configured to communicate the one or morechannels in the selected band to the signal booster to enable the signalbooster to: measure a base station coupling loss (BSCL) value for theone or more channels; and set an uplink gain or a noise power of anuplink signal based on the BSCL value of the one or more channels.

Example 37 includes the channelization device of any of Examples 35 to36, wherein the channelized notch filter is a dual-common port (DCP)multi-bandpass filter (MBF) notch filter that includes two or morebandpass filters in a single package, wherein a first bandpass filter inthe DCP MBF is configured for an uplink signal, and a second bandpassfilter in the DCP MBF is configured for the downlink signal.

Example 38 includes the channelization device of any of Examples 35 to37, wherein the selected band is selected as one or more of: a thirdgeneration partnership project (3GPP) long term evolution (LTE)frequency division duplex (FDD) band 1 through 33; or a 3GPP LTE timedivision duplex (TDD) band 34 through 44.

Example 39 includes the channelization device of any of Examples 35 to38, further comprising one or more amplifiers operatively coupled to thechannelized notch filter and configured to set a noise power and providesufficient amplification to the downlink signal to compensate for lossin the channelization device.

Example 40 includes the channelization device of any of Examples 35 to39, wherein the one or more amplifiers are further configured to provideamplification to the downlink signal to compensate for downlink signalloss that occurs between the channelization device and the signalbooster.

Example 41 includes an active channelization device for assessingnetwork sensitivity of a signal booster, the channelized devicecomprising: a first interface port coupled to a first diplexer toreceive a downlink signal from the signal booster; a second interfaceport coupled to a second diplexer; and a channelized filter configuredto filter one or more channels in a selected band of the downlinksignal.

Example 42 includes the active channelization device of Example 41,further comprising; a controller configured to: receive a gain reductionlevel of an uplink signal from the signal booster that is caused by abase station coupling loss (BSCL) value of the downlink signal; andmeasure a channelized base station coupling loss (BSCL) value for theone or more channels of the downlink signal; and an amplifier configuredto amplify the uplink signal based on the channelized BSCL value and thereceived gain reduction level.

Example 43 includes the active channelization device of any of Examples41 to 42, wherein the channelized filter comprises two or more filtersthat are one or more of a notch filter, a bandpass filter, a dual-commonport (DCP) multi-bandpass filter (MBF) notch filter, or a dual-commonport (DCP) multi-bandpass filters (MBF).

Example 44 includes the active channelization device of any of Examples41 to 43, wherein the channelized filter is comprised of one or more ofa radio frequency (RF) notch filter or an intermediate frequency (IF)notch filter.

Example 45 includes the active channelization device of any of Examples41 to 44, wherein the RF notch filter or IF notch filter are configuredto substantially block a selected channel in the downlink signal.

Example 46 includes the active channelization device of any of Examples41 to 45, wherein the RF notch filter or the IF notch filter areconfigured to substantially block the selected channel in the downlinksignal to increase the BSCL value and increase an uplink gain or noisepower of the uplink signal.

Example 47 includes the active channelization device of any of Examples41 to 46, further comprising a local oscillator (LO) configured to scanthe selected band in the downlink signal to position one or more of theIF notch filters over a frequency of a selected channel in the downlinksignal.

Example 48 includes the active channelization device of any of Examples41 to 47, wherein the LO is configured to scan the selected band in thedownlink signal to position one or more of the IF notch filters over thefrequency of the selected channel in the downlink signal to increase theBSCL value and increase an uplink gain or noise power of the uplinksignal.

Example 49 includes the active channelization device of any of Examples41 to 48, further comprising a local oscillator (LO) configured to scanthe selected band in the downlink signal to position two or more of theIF notch filters over a selected frequency of a channel in the downlinksignal to increase the BSCL value and increase a gain or noise power ofthe uplink signal, wherein the two or more notch filters are added to aswitched section to allow for a greater notch width to block one or morechannels in the downlink signal to increase the BSCL value and increasea gain or noise power of the uplink signal.

Example 50 includes a method for increasing signal booster gain of asignal booster while maintaining network protections, comprising:receiving a wideband downlink signal with a base station coupling lossBSCL value; switching in two or more channelized filters, wherein eachchannelized filter is configured to filter a selected channel in thewideband downlink signal to form a channelized downlink signal;determining a BSCL value for each of the channelized downlink signals;and selecting the channelized filter associated with a selected BSCLvalue of each of the channelized downlink signals; and adjusting a gainor a noise power of the uplink signal at the signal booster based on theselected channelized filter while maintaining the network protections.

Example 51 includes the method of Example 50, wherein each channelizedfilter is comprised of radio frequency filters or intermediate frequencyfilters.

Example 52 includes the method of any of Examples 50 to 51, furthercomprising selecting the channelized radio frequency filters (RF) orchannelized intermediate frequency (IF) filters that are associated witha lowest BSCL value of each of the channelized downlink signals when thetwo or more channelized radio frequency filters are notch filters,wherein the channelized RF filters or channelized IF filters arecomprised of a DCP MPF filter that includes two or more bandpass filtersin a single package.

Example 53 includes the method of any of Examples 50 to 52, furthercomprising selecting the channelized radio frequency filters orchannelized intermediate frequency filters that are associated with ahighest BSCL value of each of the channelized downlink signals when thetwo or more channelized radio frequency filters are bandpass filters.

Example 54 includes a method for increasing signal booster gain whilemaintaining network protections, comprising: receiving a widebanddownlink signal with a base station coupling loss (BSCL) value;digitizing the wideband downlink signal to form a plurality ofchannelized downlink signals; determining a BSCL value for each of theplurality of channelized downlink signals; and using a digital filter toadjust a gain of one or more of the channelized downlink signals tooptimize a gain for each channel based on network protection.

Example 55 includes the method of Example 54, further comprising using adigital filter to set a gain or a noise power to a maximum level of eachof the channelized downlink signals based on the BSCL value for each ofthe channelized downlink signals.

Example 56 include a channelization device of a wideband repeater, thechannelization device comprising: a first diplexer; a second diplexer; aplurality of switchable signal paths between the first diplexer and thesecond diplexer operable to perform channelized passive filtering ofsignals in defined bands; a channelized analog bandpass filter in eachof the plurality of switchable signal paths, wherein the channelizedanalog bandpass filter comprises: a downlink analog bandpass filterconfigured to filter one or more channels in a selected band of adownlink signal; and an uplink analog bandpass filter configured tofilter one or more channels in a selected band of an uplink signal; andone or more switchable pass through signal paths between the firstdiplexer and the second diplexer operable to pass through signals in thedefined bands without filtering of the signals, wherein thechannelization device is configured to perform channelized passivefiltering of signals with no amplification of the signals.

Example 57 includes the channelization device of Example 56, wherein:the plurality of switchable signals paths are configured to perform thechannelized passive filtering of the signals in the defined bands whenthe wideband repeater is exposed to a near-far base station scenario;and the one or more switchable pass through signal paths are configuredto pass through the signals in the defined bands without filtering ofthe signals while bypassing the plurality of switchable signals pathsthat perform the channelized passive filtering when the widebandrepeater is not exposed to the near-far base station scenario.

Example 58 includes the channelization device of any of Examples 56 to57, wherein the channelized analog bandpass filter is an analog radiofrequency (RF) bandpass filter for filtering one or more channels in theselected band of the downlink signal or the selected band of the uplinksignal.

Example 59 includes the channelization device of any of Examples 56 to58, wherein the channelized analog bandpass filter is a dual-common port(DCP) multi-bandpass filter (MBF) for filtering one or more channels inthe selected band of the downlink signal or the selected band of theuplink signal.

Example 60 includes the channelization device of any of Examples 56 to59, wherein the channelized analog bandpass filter is a duplexer forfiltering one or more channels in the selected band of the downlinksignal or the selected band of the uplink signal.

Example 61 includes the channelization device of any of Examples 56 to60, further comprising logic for dynamically configuring the pluralityof switchable signal paths and the one or more switchable pass throughsignal paths based on an instruction received from at least one of: acontroller of the wideband repeater, a user of the wideband repeater ora remote server.

Example 62 includes the channelization device of any of Examples 56 to61, wherein: the first diplexer is a first high band diplexer and thesecond diplexer is a second high band diplexer; or the first diplexer isa first low band diplexer and the second diplexer is a second low banddiplexer.

Example 63 includes the channelization device of any of Examples 56 to62, further comprising a variable attenuator for each defined band toenable separate signal attenuation for each defined band.

Example 64 includes the channelization device of any of Examples 56 to63, further comprising: a first antenna port communicatively coupled toa first antenna of the wideband repeater; and a second antenna portcommunicatively coupled to a second antenna of the wideband repeater.

Example 65 includes the channelization device of any of Examples 56 to64, wherein the channelization device is configured to operate in serieswith an active wideband repeater.

Example 66 includes the channelization device of any of Examples 56 to65, wherein the defined bands include high bands or low bands, whereinthe high bands include: third generation partnership project (3GPP) longterm evolution (LTE) band 4 (B4) or band 25 (B25), and the low bandsinclude: 3GPP LTE band 5 (B5), band 12 (B12) or band 13 (B13).

Example 67 includes a channelization device of a wideband repeater, thechannelization device comprising: a first diplexer; a second diplexer; aplurality of switchable signal paths between the first diplexer and thesecond diplexer operable to perform channelized passive filtering ofsignals in defined bands; and a plurality of switchable pass throughsignal paths between the first diplexer and the second diplexer operableto pass through signals in the defined bands without filtering of thesignals, wherein the channelization device is configured to performchannelized passive filtering of signals with no amplification of thesignals.

Example 68 includes the channelization device of Example 67, wherein:the plurality of switchable signals paths are configured to perform thechannelized passive filtering of the signals in the defined bands whenthe wideband repeater is exposed to a near-far base station scenario;and the plurality of switchable pass through signal paths are configuredto pass through the signals in the defined bands without filtering ofthe signals while bypassing the plurality of switchable signals pathsthat perform the channelized passive filtering when the widebandrepeater is not exposed to the near-far base station scenario.

Example 69 includes the channelization device of any of Examples 67 to68, wherein a switchable signal path in the plurality of switchablesignal paths includes an analog radio frequency (RF) bandpass filter forfiltering a signal in a selected channel of a defined band.

Example 70 includes the channelization device of any of Examples 67 to69, wherein a switchable signal path in the plurality of switchablesignal paths includes a dual-common port (DCP) multi-bandpass filter(MBF) for filtering a signal in a selected channel of a defined band.

Example 71 includes the channelization device of any of Examples 67 to70, wherein a switchable signal path in the plurality of switchablesignal paths includes one or more duplexers for filtering a signal in adefined band.

Example 72 includes the channelization device of any of Examples 67 to71, wherein the defined bands include high bands or low bands, whereinthe high bands include: third generation partnership project (3GPP) longterm evolution (LTE) band 4 (B4) or band 25 (B25), and the low bandsinclude: 3GPP LTE band 5 (B5), band 12 (B12) or band 13 (B13).

Example 73 includes the channelization device of any of Examples 67 to72, further comprising logic for dynamically configuring the pluralityof switchable signal paths and the plurality of switchable pass throughsignal paths based on an instruction received from at least one: acontroller of the wideband repeater, a user of the wideband repeater ora remote server.

Example 74 includes the channelization device of any of Examples 67 to73, wherein: the first diplexer is a first high band diplexer and thesecond diplexer is a second high band diplexer; or the first diplexer isa first low band diplexer and the second diplexer is a second low banddiplexer.

Example 75 includes the channelization device of any of Examples 67 to74, further comprising a variable attenuator for each defined band toenable separate signal attenuation for each defined band.

Example 76 includes the channelization device of any of Examples 67 to75, further comprising: a first antenna port communicatively coupled toa first antenna of the wideband repeater; and a second antenna portcommunicatively coupled to a second antenna of the wideband repeater.

Example 77 includes a wideband repeater, comprising: a first interfaceport; a second interface port; a channelization device communicativelycoupled to the first interface port and the second interface port, thechannelization device comprising: a first diplexer; a second diplexer; aplurality of switchable signal paths between the first diplexer and thesecond diplexer operable to perform channelized passive filtering ofsignals in defined bands; and a plurality of switchable pass throughsignal paths between the first diplexer and the second diplexer operableto pass through signals in the defined bands without filtering of thesignals, wherein the channelization device is configured to performchannelized passive filtering of signals with no amplification of thesignals.

Example 78 includes the wideband repeater of Example 77, wherein: theplurality of switchable signals paths are configured to perform thechannelized passive filtering of the signals in the defined bands whenthe wideband repeater is exposed to a near-far base station scenario;and the plurality of switchable pass through signal paths are configuredto pass through the signals in the defined bands without filtering ofthe signals while bypassing the plurality of switchable signals pathsthat perform the channelized passive filtering when the widebandrepeater is not exposed to the near-far base station scenario.

Example 79 includes the wideband repeater of any of Examples 77 to 78,wherein a switchable signal path in the plurality of switchable signalpaths includes one of: a dual-common port (DCP) multi-bandpass filter(MBF) or a duplexer for filtering a signal in a defined band.

Example 80 includes the wideband repeater of any of Examples 77 to 79,further comprising a controller operable to send an instruction to thechannelization device for dynamically configuring the plurality ofswitchable signal paths and the one or more switchable pass throughsignal paths.

Various techniques, or certain aspects or portions thereof, can take theform of program code (i.e., instructions) embodied in tangible media,such as floppy diskettes, compact disc-read-only memory (CD-ROMs), harddrives, non-transitory computer readable storage medium, or any othermachine-readable storage medium wherein, when the program code is loadedinto and executed by a machine, such as a computer, the machine becomesan apparatus for practicing the various techniques. Circuitry caninclude hardware, firmware, program code, executable code, computerinstructions, and/or software. A non-transitory computer readablestorage medium can be a computer readable storage medium that does notinclude signal. In the case of program code execution on programmablecomputers, the computing device can include a processor, a storagemedium readable by the processor (including volatile and non-volatilememory and/or storage elements), at least one input device, and at leastone output device. The volatile and non-volatile memory and/or storageelements can be a random-access memory (RAM), erasable programmable readonly memory (EPROM), flash drive, optical drive, magnetic hard drive,solid state drive, or other medium for storing electronic data. The lowenergy fixed location node, wireless device, and location server canalso include a transceiver module (i.e., transceiver), a counter module(i.e., counter), a processing module (i.e., processor), and/or a clockmodule (i.e., clock) or timer module (i.e., timer). One or more programsthat can implement or utilize the various techniques described hereincan use an application programming interface (API), reusable controls,and the like. Such programs can be implemented in a high levelprocedural or object oriented programming language to communicate with acomputer system. However, the program(s) can be implemented in assemblyor machine language, if desired. In any case, the language can be acompiled or interpreted language, and combined with hardwareimplementations.

As used herein, the term processor can include general purposeprocessors, specialized processors such as VLSI, FPGAs, or other typesof specialized processors, as well as base band processors used intransceivers to send, receive, and process wireless communications.

It should be understood that many of the functional units described inthis specification have been labeled as modules, in order to moreparticularly emphasize their implementation independence. For example, amodule can be implemented as a hardware circuit comprising customvery-large-scale integration (VLSI) circuits or gate arrays,off-the-shelf semiconductors such as logic chips, transistors, or otherdiscrete components. A module can also be implemented in programmablehardware devices such as field programmable gate arrays, programmablearray logic, programmable logic devices or the like.

In one example, multiple hardware circuits or multiple processors can beused to implement the functional units described in this specification.For example, a first hardware circuit or a first processor can be usedto perform processing operations and a second hardware circuit or asecond processor (e.g., a transceiver or a baseband processor) can beused to communicate with other entities. The first hardware circuit andthe second hardware circuit can be incorporated into a single hardwarecircuit, or alternatively, the first hardware circuit and the secondhardware circuit can be separate hardware circuits.

Modules can also be implemented in software for execution by varioustypes of processors. An identified module of executable code can, forinstance, comprise one or more physical or logical blocks of computerinstructions, which can, for instance, be organized as an object,procedure, or function. Nevertheless, the executables of an identifiedmodule need not be physically located together, but can comprisedisparate instructions stored in different locations which, when joinedlogically together, comprise the module and achieve the stated purposefor the module.

Indeed, a module of executable code can be a single instruction, or manyinstructions, and can even be distributed over several different codesegments, among different programs, and across several memory devices.Similarly, operational data can be identified and illustrated hereinwithin modules, and can be embodied in any suitable form and organizedwithin any suitable type of data structure. The operational data can becollected as a single data set, or can be distributed over differentlocations including over different storage devices, and can exist, atleast partially, merely as electronic signals on a system or network.The modules can be passive or active, including agents operable toperform desired functions.

Reference throughout this specification to “an example” or “exemplary”means that a particular feature, structure, or characteristic describedin connection with the example is included in at least one embodiment ofthe present invention. Thus, appearances of the phrases “in an example”or the word “exemplary” in various places throughout this specificationare not necessarily all referring to the same embodiment.

As used herein, a plurality of items, structural elements, compositionalelements, and/or materials can be presented in a common list forconvenience. However, these lists should be construed as though eachmember of the list is individually identified as a separate and uniquemember. Thus, no individual member of such list should be construed as ade facto equivalent of any other member of the same list solely based ontheir presentation in a common group without indications to thecontrary. In addition, various embodiments and example of the presentinvention can be referred to herein along with alternatives for thevarious components thereof. It is understood that such embodiments,examples, and alternatives are not to be construed as defactoequivalents of one another, but are to be considered as separate andautonomous representations of the present invention.

Furthermore, the described features, structures, or characteristics canbe combined in any suitable manner in one or more embodiments. In thefollowing description, numerous specific details are provided, such asexamples of layouts, distances, network examples, etc., to provide athorough understanding of embodiments of the invention. One skilled inthe relevant art will recognize, however, that the invention can bepracticed without one or more of the specific details, or with othermethods, components, layouts, etc. In other instances, well-knownstructures, materials, or operations are not shown or described indetail to avoid obscuring aspects of the invention.

While the forgoing examples are illustrative of the principles of thepresent invention in one or more particular applications, it will beapparent to those of ordinary skill in the art that numerousmodifications in form, usage and details of implementation can be madewithout the exercise of inventive faculty, and without departing fromthe principles and concepts of the invention. Accordingly, it is notintended that the invention be limited, except as by the claims setforth below.

What is claimed is:
 1. A repeater, comprising: a signal path thatincludes a digital filter; and a controller operable to: receive amulti-channel downlink signal; digitize the multi-channel downlinksignal to form a plurality of channelized downlink signals; determine abase station coupling loss (BSCL) value for each of the channelizeddownlink signals; and use the digital filter to adjust a gain of one ormore of the channelized downlink signals based on the BSCL value foreach of the channelized downlink signals.
 2. The repeater of claim 1,wherein the controller is further operable to use the digital filter toadjust the gain to optimize the gain for each channel based on networkprotection.
 3. The repeater of claim 1, wherein the controller isfurther operable to use the digital filter to adjust a noise power ofeach of the channelized downlink signals based on the BSCL value foreach of the channelized downlink signals.
 4. The repeater of claim 1,wherein the gain is adjusted to a maximum level permitted by a FederalCommunications Commission regulation.
 5. The repeater of claim 1,wherein the gain is adjusted separately for each of the channelizeddownlink signals to produce different gain levels for the channelizeddownlink signals based on different BSCL values for each of thechannelized downlink signals.
 6. The repeater of claim 1, furthercomprising: a first diplexer; and a second diplexer, wherein the signalpath is communicatively coupled between the first diplexer and thesecond diplexer.
 7. The repeater of claim 1, further comprising: a firstantenna port communicatively coupled to a first antenna of the widebandrepeater; and a second antenna port communicatively coupled to a secondantenna of the repeater.
 8. The repeater of claim 1, wherein thecontroller is operable to receive the multi-channel downlink signal in adefined band, wherein the defined band is a low band or a high band,wherein the low band is third generation partnership project (3GPP) longterm evolution (LTE) band 5 (B5), band 12 (B12) or band 13 (B13), andthe high band is 3GPP LTE band 4 (B4) or band 25 (B25).
 9. The repeaterof claim 1, wherein the controller is a digital signal processor (DSP).10. The repeater of claim 1, wherein the controller is configured toreduce a gain of one or more channels in the plurality of channelizeddownlink signals or remove one or more channels in the plurality ofchannelized downlink signals to reduce a received signal strengthindicator (RSSI) of a downlink and enable a gain of an uplink signal tobe increased by the repeater.
 11. A signal booster, comprising: a firstantenna port; a second antenna port; a signal path communicativelycoupled between the first antenna port and the second antenna port, thesignal path including a digital filter; and a digital signal processor(DSP) operable to: receive a multi-channel downlink signal; digitize themulti-channel downlink signal to form a plurality of channelizeddownlink signals; determine a base station coupling loss (BSCL) valuefor each of the channelized downlink signals; and use the digital filterto adjust a gain of one or more of the channelized downlink signalsbased on the BSCL value for each of the channelized downlink signals.12. The signal booster of claim 11, wherein the controller is furtheroperable to use the digital filter to adjust the gain to optimize thegain for each channel while maintaining network protections.
 13. Thesignal booster of claim 11, wherein the controller is further operableto use the digital filter to adjust a noise power of each of thechannelized downlink signals based on the BSCL value for each of thechannelized downlink signals.
 14. The signal booster of claim 11,wherein the gain is adjusted to a maximum level permitted by a FederalCommunications Commission regulation.
 15. The signal booster of claim11, further comprising: a first antenna port communicatively coupled toa first antenna of the signal booster; and a second antenna portcommunicatively coupled to a second antenna of the signal booster. 16.The signal booster of claim 11, wherein the controller is operable toreceive the multi-channel downlink signal in a defined band, wherein thedefined band is a low band or a high band, wherein the low band is thirdgeneration partnership project (3GPP) long term evolution (LTE) band 5(B5), band 12 (B12) or band 13 (B13), and the high band is 3GPP LTE band4 (B4) or band 25 (B25).
 17. At least one machine readable storagemedium having instructions embodied thereon, the instructions whenexecuted by one or more processors perform the following: identifying,using a controller in a repeater, a multi-channel downlink signal;digitizing, using the controller, the multi-channel downlink signal toform a plurality of channelized downlink signals; determining, using thecontroller, a base statin coupling loss (BSCL) value for each of thechannelized downlink signal; and adjusting, using the controller and adigital filter included on a signal path of the repeater, a gain of oneor more of the channelized downlink signals based on the BSCL value foreach of the channelized downlink signals.
 18. The at least one machinereadable storage medium of claim 17, further comprising instructionswhen executed perform the following: adjusting, using the digitalfilter, the gain to optimize the gain for each channel based on networkprotection.
 19. The at least one machine readable storage medium ofclaim 17, further comprising instructions when executed perform thefollowing: adjusting, using the digital filter, a noise power of each ofthe channelized downlink signals based on the BSCL value for each of thechannelized downlink signals.
 20. The at least one machine readablestorage medium of claim 17, wherein the gain is adjusted to a maximumlevel permitted by a Federal Communications Commission regulation. 21.The at least one machine readable storage medium of claim 17, whereinthe gain is adjusted separately for each of the channelized downlinksignals to produce different gain levels for the channelized downlinksignals based on different BSCL values for each of the channelizeddownlink signals.
 22. The at least one machine readable storage mediumof claim 17, wherein the multi-channel downlink signal is in a low bandor a high band, wherein the low band is third generation partnershipproject (3GPP) long term evolution (LTE) band 5 (B5), band 12 (B12) orband 13 (B13), and the high band is 3GPP LTE band 4 (B4) or band 25(B25).
 23. The at least one machine readable storage medium of claim 17,wherein the controller is a digital signal processor (DSP).